Airs: Tuesday, May 15 at 8/7c Teddy's back! Why? Can't tell you that. But he's not the only one returning. Naomi's former lovers — Austin, who last made for the Big House after confessing to a crime he didn't commit, and Max, the nerd boy she overlooked when Austin showed up — are back just in time for her wedding to P.J. Awkward! (And P.J.'s secretly broke — double awkward! And Max is engaged to someone else — triple awkward!) Also back in the zip code? Dixon, who totally ditched Adrianna without so much as a goodbye when he was offered a chance to go on tour. He's gonna have some 'splainin' to do — and she may not want to hear it now that she's gone country with the help of Austin. Meanwhile, watch for Navid and Liam to duke it out in Vegas when Navid finds out that Liam had sympathy sex with Silver. Then there's Annie, who will hook up with cutie priest Caleb and somehow, they're going to inadvertently force Ivy's street artist guy Diego to go on the run. Ivy just can't catch a break!

Airs: Thursday, May 10 at 8/7c And you thought choosing between his mom and his girlfriend was hard! When NASA reschedules his shuttle launch, Howard is faced with his ultimate Sophie's choice: realizing his lifelong dream of heading into space or marrying Bernadette. Her ex-cop dad (Grace Under Fire's Casey Sander) tries to knock some sense into Howard so his hard-earned money on the wedding won't go to waste, but Howard will also have a space angel on his other shoulder in the form of real-life astronaut Mike Massimino. Still, who says they can't elope before Howard launches? Meanwhile, look for a big development with Penny. Hmm, could it have to do with what Leonard tells her in the penultimate episode?

Airs: Friday, May 11 at 10/9c After getting intel on a terrorist attack in the city, Frank will try to pull his best Jack Bauer to prevent it from happening despite not knowing the location or the means. Meanwhile, there will be a "big conclusion" to Jamie's undercover assignment on the Sanfino crime family, Will Estes says. "He's got people looking for him now since he vanished, and it's going to test his nerves." Not to mention his values. Jamie was already unnerved after he got mobster Tesla killed, so would he be able to pull the trigger if it comes down to it? "Jamie says a line coming up: 'You can't write people off,'" Estes says. "He's saying it's not OK to kill a guy because he's a criminal. Not all crimes are worthy of a death sentence."

Airs: Monday, May 14 at 8/7c How to top last year's baby bombshell? The team behind Bones chose good old-fashioned terror. Super-smart cyber killer Christopher Pelant (guest star Andrew Leeds) will be back to taunt Booth, Brennan and the Jeffersonian team in ways that creator Hart Hanson says will "scare the crap out of people." Unfortunately, the danger doesn't end there: Hanson and fellow executive producer Stephen Nathan confirm Pelant will be around in Season 8. "He will change the course of the series for a little bit," Nathan says. As for this season's cliff-hanger? Look for Pelant to manipulate the evidence in the team' s latest investigation in a way that implicates Brennan. "It's going to put [Booth and Brennan] in a completely different situation than they've been in before professionally," Nathan says. "And that will affect them personally to a large, large extent."

Airs: Monday, May 7 at 10/9c When a new case picks at that pesky scab also known as Beckett's mother's murder (which Castle has secretly been investigating), Castle is forced "to wrestle with whether or not he needs to come clean about the secret that he's been holding from Beckett," creator and executive producer Andrew W. Marlowe says. Perhaps making the decision easier: The appearance of Battlestar Galactica's Tahmoh Penikett, who plays a mysterious man with a military background. (The military has snipers, right? Look out, Kate!) One way or the other, it sounds like they will air their dirty laundry. "Everyone is forced to put their cards on the table," Marlowe says. "They've been dancing around some issues. They've been living in subtext. …The cards that they put on the table last year didn't deal with how they felt about one another. [This year], everything comes out."

Airs: Wednesday, May 16 at 9/8c (two hours) The BAU will be forced to put one of its own into a hostage situation when the team locks horns with Battlestar Galactica's Tricia Helfer, who plays the leader of a group of bank robbers. "She's just a bad egg," executive producer Erica Messer says. "Ultimately, she is a serial killer masquerading as a bank robber." But the two-hour episode, which serves as Paget Brewster's (second) swan song as Emily Prentiss, won't be all gloomy. "We've already had Prentiss' funeral. We already played that game," Messer said. "I didn't think it was fair to everybody left behind to now have to mourn the death of her for real. [We wanted] to be able to cry for the right reason at the end of the season." Those tears will be shed at a wedding, but which team member will tie the knot? (Well, J.J.'s mom will be there…)

Airs: Tuesday, May 29 at 8/7c Fans of the cul-de-sac crew already know Jules and Grayson are headed towards the altar. But that doesn't mean their nuptials won't hit plenty of roadblocks, and possibly even a cancellation or two. One big speed bump? A major lifestyle difference between Jules and Grayson that involves the entire crew. What else should fans expect? A death! A resurrection! An arrest! Oh, and lots of vino, natch.

Airs: Wednesday, May 9 at 10/9c Guest stars abound! The episode features the debut of Peri Gilpin as D.B. Russell's wife as well as the return of Jaclyn Smith as Hodges' mother. But it's Connor O'Farrell who will make the most waves when former Undersheriff McKeen returns for the first time since he killed Warrick. He'll wage war on the CSI team, which is stuck with a sensitive case that causes Russell and Finlay to butt heads. "We have a murder that is reminiscent of the case that got Finlay fired in Seattle," executive producer Don McGill says. "It dredges up deep feelings from the past between Finlay and Russell. Finlay is someone who has a tendency to, in her quest for justice, cross the line." Although McKeen will attempt to discredit Russell, he also has his eyes on Nick, who will "really, really contemplate whether or not he wants to be a CSI anymore," McGill says.

Airs: Friday, May 11 at 9/8c Mac gets shot! But don't worry, he'll at least survive long enough for all the show's characters to wax sentimental about him. "It's about all of their relationships and closeness with Mac as a father figure, as a friend, as a boss," executive producer Pam Veasey says. "Some people are releasing demons, others are talking about their future." But it's the show's future that's once again in the most jeopardy. "We attempted to create a finale the audience would be satisfied with if we should be canceled," Veasey says. "We give moments to every one of our core actors. They get to speak to who their character was these past eight years."

Airs: Sunday, May 13 at 9/8c Recent changes in Gaby and Carlos' financial circumstances will lead them to contemplate a major change that would not only alter their lives, but the lives of everyone on Wisteria Lane. Expect some major fireworks on Bree's big day in court when someone tries to sneak a weapon into the courtroom. And in addition to a Hitchcockian cameo by series creator Marc Cherry, look for return appearances from former Fairview residents Katherine (Dana Delany), Martha Huber (Christine Estabrook), Rex (Steven Culp), Karl (Richard Burgi) and the recently deceased Mike Delfino. Considering many of these folks lack a pulse, we can't help but wonder if they'll serve as an afterlife welcoming committee for another Wisteria Lane victim.

Airs: Friday, May 11 at 8/7c It's a family reunion! When Walter's brother Langston (George Stults) comes to town with news that their father (John Ashton) isn't long for this world, Walter is tasked with fulfilling his dad's dying wish: to be reunited one last time with the boys' mother (Annette O'Toole). "This episode is completely different than the 12 before it," Geoff Stults says. "It's dark. You see the old Walter — you see the military killer that he once was. But you also see the little boy in there that's just happy to be back with his mom, and happy to be around his brother."

Airs: Friday, May 11 at 9/8c The final three episodes act as an "eventful" and "emotional" three-part finale, the first hour of which "forces our two universes to come to a conclusion as to how [the team is] going to try to slow down David Robert Jones," executive producer Jeff Pinkner says. But Jones won't go down without a fight, which could lead to fatalities. Don't expect the rest of the gang to remember their old lives like Olivia, however, since that's not the producers' end game. Rest assured, the finale will offer enough closure to satisfy fans should the series not get renewed, but will also serve as the beginning of a new chapter that, Pinkner says, "will pique people's interest" if the show's renewed.

Airs: Sunday, May 6 at 10/9c Heather may have stolen Carlene's land right out from under her, but that doesn't mean Carlene and Ripp's "Condos for Christians" plan is completely kaput. Look for that idea to be revisited in a new location when the show heads south of the border. Plus, sounds like the Bs are cooking up one delicious cliff-hanger. "The last scene, you're going to be like, 'Oh my God! If we don't come back for a second season, you're going to be pissed," star Leslie Bibb promises. "It's one of those moments." Plus: Look for an appearance from Sandra Bernhard!

Airs: Tuesday, May 22 at 8/7c Who's staying in Lima and who's moving on? All will be revealed in the finale. With Nationals behind them, it's time for McKinley's seniors — not Artie, Blaine, Sam or Tina — to don their caps and gowns for graduation day. Who the show follows — or where it follows them to — is anyone's guess. But here's what we do know: The G-day soundtrack is going to rock. Goodbye anthems include Green Day's "Good Riddance (Time of Your Life)," Madonna's "I'll Remember," Bruce Springsteen's "Glory Days" and Beyonce's "I Was Here." Any guesses as to who will sing what and why?

Airs: Sunday, April 29 at 9/8c Diane and Will have weathered a number storms on behalf of Lockhart & Gardner, but they will face their biggest challenge yet when ruthless litigators Patti Nyholm and Louis Canning sue the firm for fraud in an attempt to bankrupt it. Kalinda will also face personal troubles when her recent tax issues bring parts of her past to the forefront. Could this be the work of the occasional State's Attorney investigator Andrew Wiley, who returns in the finale? Or is he just back on the scene to rain on Alicia and Peter's parade once again?

Airs: Monday, May 14 at 8/7c Sorry, Dair and Chair fans: The finale is pretty much all about Serena, who has recently pulled one big Kardashian on us, no? S started the season wanting a behind-the-scenes existence, but now she's obsessed with reclaiming her It girl crown and using her new secret role Gossip Girl to do it! It's safe to say Charlie isn't the only one who's going to find out about that gig. Series boss Josh Safran also tells us that while the finale won't look to exceed the over-the-top lavishness of Blair's wedding, the emotional cliff-hangers that clinch the season will have the biggest ramifications ever. "It's very much like somebody presses a button and detonates a bomb and things will never be the same — more so than ever before," Safran says. Too soon to say, "Peace out, Dan! Welcome back, Chuck!"?

Airs: Thursday, May 17 at 9/8c Get ready for a finale filled with drama of the ferry-boat-crash and hospital-shooting variety. "[Something] occurs for many of our characters that places a lot of them in a position to discover what they're made of," creator Shonda Rhimes says of a major — and dangerous — event that takes place in the season-ender. Rhimes also notes that there's a huge sense of nostalgia, as some doctors prepare to possibly take jobs at different hospitals. "This could very well be the last time these doctors are working together," Rhimes says. "This could very well be the last day for some of these doctors!" Does that mean the Grim Reaper may pay a visit to Seattle Grace? Maybe. "We're taking our characters on a journey they've never been on before. It's a very shocking thing that I chose to do, and I was really stressed out about doing it."

Airs: Friday, May 18 at 9/8c In the brutally fast and action-heavy finale, Nick will use some knowledge from Aunt Marie in his capacity as a Grimm, Monroe will be put in the path of danger, and Captain Renard and Rosalee will also be involved. We'll meet both a new bad guy Wesen, who has links to something we've seen before, and Mary Elizabeth Mastrantonio as the mysterious Woman in Black. Plus: Someone we care about will run into some serious trouble in one of the finale's multiple cliff-hangers. Happily ever after? Not this season!

Airs: Monday, May 14 at 10/9c You'd think a McGarrett-Wo Fat showdown is in the cards, right? Well, it is, but it takes place in the penultimate episode — and the fallout looms large over the finale, during which Five-0 goes on a manhunt after one of its own is killed. Meanwhile, Joe White (Terry O'Quinn) returns to take McGarrett to the real Shelburne and Danny must make a painful choice between his work and his daughter. With Kono and Chin Ho also dealing with personal matters, it's safe to say that not everyone's head is in the game. "Last year we split the team up; this year we brought them back together, made them better than ever," executive producer Peter Lenkov says. "And then in the finale, when they need each other the most — they are not there for each other."

Airs: Monday, May 21 at 8/7c Now that we know Wilson is suffering from cancer, the ominous title of the Fox drama's final hour, "Everybody Dies," is a bit clearer. And even though the finale welcomes back Thirteen (Olivia Wilde) and Martha M. Masters (Amber Tamblyn) and features a drug-addict patient (James LeGros), the focus of the episode will no doubt be on the House-Wilson relationship. That will probably mean less resolution for the other supporting characters. "It's not going to tie up everything — that's not what this is about," Robert Sean Leonard tells us. "I think the show is going to end very abruptly and in a very surprising way because, as happens in life, you don't live the ending. You just live your life." And if you're afraid the "everybody" in the episode's title also refers to the demise of Dr. Gregory House, consider this: "There is something defiant about him, and I think the worst possible thing would be to see his spirit broken," Hugh Laurie says. "I would find that depressing and that would make me unhappy."

Airs: Monday, May 14 at 8/7c It's the wedding a year in the making. We will flash-forward to Barney Stinson's wedding again — yes, he does get married — and we will at long last learn the identity of his bride. Is it Robin? Quinn? Someone else? Quinn is in the one-hour episode, which will feature a bunch of flashbacks to the youths of her, Barney and Robin, as well as an an impromptu trip for Quinn and Barney that goes awry at the airport. Meanwhile, Lily and Marshall welcome their son. And Ted? Well, his pals recall the time they encouraged the hopeless romantic to go after the one that got away. Will we also meet Mrs. Mosby?

Airs: Wednesday, May 23 at 10/9c The detectives will find themselves in the middle of a war between two elite and very politically connected escort agencies when they investigate the murder of an underage escort at a high-profile bachelor party. Fortunately, it doesn't sound like it end as messy as last season's hail-of-bullets finale. "I don't think it will involve bringing back anyone who's left or killing anyone who's there," executive producer Warren Leight teases.

Airs: Thursday, May 17 at 10/9c Creator Bruno Heller wants to be very upfront about something: "I don't think I'll be giving too much away to say that Red John does not die in this episode," he says with a laugh. Although Patrick Jane won't catch his nemesis, he will meet a cocktail waitress (Emmanuelle Chriqui), for whom he falls head over heels. "She comes into Jane's life at a very, very low ebb," Heller says. "He's at a moment when he really needs a helping hand and a little ray of light, and she provides that. And then things start to get weird." So weird, in fact, that Jane shoots one of his own team members! What? "Don't believe everything you see," Heller teases.

Airs: Tuesday, May 15 at 8/7c The West Wing's Richard Schiff guest-stars as an eccentric international businessman haunted by the loss of his son, who died in a terrorist bombing. Perhaps he can be of some service when the NCIS team tries to prevent yet another terrorist attack on U.S. soil. Elsewhere: Jimmy Palmer's getting married! But before you pop the champagne, you should also know this: Scott Wolf's mysterious, troubled Jonathan Cole will return in the finale. Better keep that bottle on ice for now.

Airs: Tuesday, May 15 at 9/8c (two hours) Remember Special Agent Renko (Brian Avers) from way back in Season 1? He'll resurface when the team is called in to assist him on an undercover operation in which his cover has potentially been blown. But as the team digs for answers, they soon learn they're playing into the hands of a criminal mastermind with a deadly plan. Also: Callen's nemesis, The Chameleon, will return. Coincidence?

Airs: Tuesday, May 8 at 9/8c Is the foursome going back to a threesome? Nope! However, one of the roomies will be moving out. No, Nick, noooooo! His replacement — yes, we're serious — will be played by none other than Reno 911's Thomas Lennon. Nick apparently will convince himself that getting back with his ex, Carolina, is a really swell idea. Elsewhere, which do you like better: Schmice or Cecidt? Hmmm, neither rolls off the tongue, so we're probably going to have to figure out a hybrid name for Schmidt and Cece that works because they'll be bound together in coupledom for the foreseeable future.

Airs: Friday, May 18 at 8/7c "There are some deaths — major deaths, a cast shakeup," executive producer Craig Silverstein promises. "I would say that the finale will be our biggest game-changer yet. I know there will be some outcry, but we don't set out to hurt our fans." Also expect to see the return of Ryan Fletcher, the president and VP, the new director of the CIA and some familiar faces from Division from Season 1. The ghost of Carla will still be present in Nikita's homecoming journey to Division, during which she brings a small army into the belly of the beast and raids the facility.

Airs: Thursday, May 10 at 9/8c The finale will also serve as Robert California's swan song. What does that mean for Dunder Mifflin? Executive producer Paul Lieberstein says Robert's exit sets up a surprise twist with regards to the company's ownership. Plus: Look for Dwight to learn once and for all if he's the father of Angela's baby and for Kelly to finally reject the advances of a desperate Ryan. (You know, so Mindy Kaling can move on to her buzzy Fox comedy pilot!)

Airs: Sunday, May 13 at 8/7c The finale's cryptic title, "A Land Without Magic," refers to "the one place where magic doesn't naturally occur: our world. That fact is a key component to the events of our season finale," producers Adam Horowitz and Edward Kitsis tell us. Regina and Emma will find themselves at odds in the finale, with the stakes for both being raised in a new way. As for whether fans of Charming and Snow will be pleased by the finale? "We hope everyone who watches is both happy and excited to see what comes next," the producers say. Let's hope so!

Airs: Thursday, May 10 at 9:30/8:30c At last, it's Election Day in Pawnee! Leslie's going to have to wait an entire day to find out if she whooped Bobby Newport's whiny behind in the race for City Council. Parks and Rec boss Mike Schur tells us they wrote and shot two endings. Also, munch on this: Win or lose, it looks like Leslie's boyfriend and campaign manager Ben could be out of a job, right? If she loses, Chris and Ron are probably also out of jobs, Schur tells us. And two things will happen no matter what: Tom and Ann will decide whether or not to pursue their relationship, and Andy will have to make a major career decision.

Airs: Thursday, May 17 at 9/8c Buffy and Angel alum Amy Acker guest-stars as a psychologist who caters to the rich and powerful. When the machine spits out her number, Reese must keep her safe from several clients who could potentially kill to keep their secrets hidden. Reese ultimately finds himself completely isolated from Finch and Carter, which may force him to again question who he can trust. But is it only his partners he should be worried about? "We're always looking for those tectonic moves — the big movements underneath everything," creator Jonathan Nolan says. "I think you'll see some relationships shifting again with another character on our show that people don't talk about as much: the machine."

Airs: Tuesday, May 15 at 10/9c In what executive producer Shonda Rhimes calls a "controversial" finale, Amelia gives birth to her baby, which developed without a brain, in order to donate its other functional organs. "It serves as a lovely backdrop for our characters, especially Addison and Charlotte, to reflect on how far they've come," Rhimes says. "They've both become mothers [without] giving birth. And Here's Amelia giving birth [but] she's not going to get to be a mother." With baby Henry now in Addison's life, will she settle down with Jake or with Sam? Maybe neither. "Is she going to get to have it all?" Rhimes asks, adding that the finale will have a surprise ending that leaves at least one very important question unanswered. Plus: Don't forget about this.

Airs: Wednesday, May 23 at 10/9c Based on the episode's title, "The Reckoning," it sure sounds like someone is going to get what's coming to them. The season-ender also promises to be quite intense: A horrific accident will take place and someone will attempt to flee town. And if we know Revenge, there'll be a major death to keep us salivating all summer.

Airs: Thursday, May 10 at 9/8c Death strikes Chance Harbor once again! "There will absolutely be real and shocking deaths at the end," executive producer Andrew Miller teases. "No one is safe as the past finally catches up to the present." Speaking of the past, John Blackwell's history will be revealed, which will "put Cassie in a position where she's forced to choose between the family she's tied to by blood and the family she's tied to by witchcraft," Miller says. "Cassie will have to finish what her mother failed to do 16 years ago."

Airs: Monday, May 14 at 10/9c It's opening night! Bombshell will open — but not on Broadway just yet — and the final Marilyn will take the stage. Who will it be? Rebecca Duvall is clearly a diva disaster and Megan Hilty tells us that "things are going to get a lot worse before they get better" for Ivy. (Pills! Also, look for Bernadette Peters to return as her mother, who won't exactly be supportive upon her return.) In our minds, that leaves small town ingénue Karen as the first preview's lucky leading lady, right? No matter who first dons the platinum blonde 'do, viewers will be treated to a near-complete Bombshell production.

Airs: Friday, May 18 at 9/8c Sam and Dean come face to face with Dick Roman, the billionaire who's now the host for the head Leviathan. It will be a David vs. Goliath scenario, as the brothers have to rely on one another since they have limited resources and allies this season. We'll also see at least one Leviathan get all toothy-mouthed, and the brothers will deal with tying up personal loose ends while reflecting on Bobby's emotional influence.

Airs: Monday, May 14 at 9/8c The fates of the show and its stars are still up in the air, but there is one person who has plans: Jake. He will graduate high school (we know, we never thought this day would come either), and while his parents are terrified about sending their lovable dimwit out in the real world, Jake makes a huge decision about what to do next. What could it possibly be? Well, it may involve an Army recruiter.

Airs: Tuesday, May 8 at 10/9c Has Carrie tracked down her sister's murderer? Elias Koteas guest-stars as Sam Rhodes, a former cop in her Syracuse hometown who is linked to the recent murder of a 14-year-old girl through circumstantial evidence. The similarities between the murder and that of Carrie's sister forces her and Al to return to Syracuse to confront Sam. But is Sam the killer or is he being framed?

Airs: Thursday, May 10 at 8/7c How do you get rid of a threat you can't kill? The finale examines that question as the Salvatores search for a way to contain Klaus. The flashback-filled episode will also show that fateful day when Elena's parents' car crashed, but don't assume that the episode title, "The Departed," refers to their deaths. In fact, two main characters will be in grave danger and both will come out a bit "different" on the other side of their traumas. Oh, and yes, there will be an important kiss.