Mac struggles with memories of his late wife when he tracks a serial killer who imprisons his female victims before murdering them. Later, Mac rescues a victim who cannot move, feel or speak, and can only communicate through blinking. Ivanov: Vitali Baganov. Nadia: Arsha Darbinyan. LeAnn: Jennifer Jackson. Goodman: Michael Hagerty.
A girl is brutally attacked while walking through Central Park, leaving her with no recollection of the assault. Meanwhile, Mac and Aiden investigate the murder of a drug dealer. Prescott: William Russ. Robin: Michele Hicks. Mata: Germaine De Leon. Karl: David Marciano. Rendish: Fred Koehler. Tracey: Joseph Thomas. Montgomery: Josh Hammond. Tompkins: Sven Holmberg. Albergo: Jeris Lee Poindexter.
Mac must determine whether someone is playing a practical joke or if a murder has occurred after a skeleton is discovered on a double-decker bus in Times Square. Moreland: Charles Parks. Mrs. Moreland: Susan Ruttan. Danner: Thomas Kopache. Joel: Johnny Sneed. Giles: Grant Albrecht. Bruno: Frank Medrano.
Mac investigates the murder of an up-and-coming hip-hop deejay who just won a prestigious championship for spinners. Across town, Stella probes the death of an acclaimed fashion designer who is found dead in her penthouse swimming pool, the victim of an alleged drowning, but Stella believes the woman was murdered. Vick: Master P. Prince: Dorian Missick. Thomas: Billy Brown. Placid: Ricky Harris. Madison: Olivia Burnette.
Mac and Danny go 700 feet below ground to investigate when a construction worker is killed in a tunnel explosion. Elsewhere, Stella probes the death of a teen girl found floating in a creek. Mitford: Terry Kinney. Pete: Eric Ritter. Joe: Joe Sikora. Zito: Mike Pniewski. McGrath: Mel Rodriguez. Wesley: Vince Donvito. Donelly: John DiMaggio. Tina: Sarah Foret. Paulson: Joshua Leonard.
Mac and Stella investigate when a male human leg is found near a loading dock and a human finger from a different victim is discovered in a freezer. In a Brooklyn diner, Danny and Aiden probe a multiple homicide in which the victims were all shot and their heads placed in bags.
Mac and Stella investigate a botched bank robbery in Chinatown that leaves two crooks dead after an explosion sets them on fire and burns their homemade masks into their skin. Unfortunately, rain washes away key blood and DNA evidence, and burns destroy most of the thieves' fingerprints. But the investigation reveals that a third person was involved, who apparently escaped. Joanne: Samantha Quan. Hummel: Matt Bushell. Fenn: Andre Ware. Nina: Kym Hoy.
Mac is called in when an abandoned briefcase discovered on the trading floor of a mercantile exchange yields not a bomb but blood evidence from the owner, who has gone missing. The investigation quickly centers on a man involved in illegal trading. Across town, Stella tries to determine whether a woman found dead on a church's property is a murder or suicide victim. Jane: Sonya Walger. Sutton: Steven Flynn. Paul: Peter O'Meara. Father Murphy: Larry Clarke. Emily: Sarah Aldrich.
A mounted officer riding to investigate a fight between two men in Central Park is slain by a sniper. In Queens, Aiden probes the death of a 19-year-old man found in an alley with burn marks on his face. Mitford: Terry Kinney. Jane: Sonya Walger. Chancey: Allen Payne. Brown: Gabriel Casseus. Starks: Kanin Howell. Mandi: Erin O'Connor. Jenny: Elle Fanning. Smockton: Barry Del Sherman. Vicenzo: Jude Ciccolella. Raquel: Denice J. Sealy.
Mac and Stella investigate the murder of a woman who was stabbed in the heart with a wooden stake. The police arrest a woman who was kneeling over the body with blood on her, but Mac isn't convinced that she committed the crime. Elsewhere, Danny and Aiden probe an apparent beating death. Ophelia: Heather Kafka. Rydell: Scott Valentine. Camden: Corin Nemec. Mallone: Nicholas Pratley. Walder: Bradley Stryker. Eduardo: Michael Irby.
In Brooklyn, a man is found dead on train tracks, an apparent victim of electrocution, but the evidence points to murder. In Manhattan, an art dealer is discovered shot to death in his gallery, while in Queens a construction worker is killed. Maka: Kelly Hu. Galanis: Ray Abruzzo. Gianetti: Jay Acovone. Leathan: T.J. Thyne. James: Peter Giles. Brocco: Patrick Brennan. Galanis: Carter Jenkins. Hopper: Kellan Lutz. Whitefield: Sean Vincent Biggins.
Stella investigates the death of a bicycle messenger who was stabbed as he rode along his route, while Mac probes the murder of a dog handler at a national kennel show who was found with a foot-long knitting needle rammed through her. Both investigations reveal that the victims weren't particularly liked by their colleagues and associates.
Mac and Stella investigate after a young man is beaten to death with a baseball bat in a park. A tattoo found on the victim may link him to the mob. Elsewhere, Danny and Aiden probe a hit-and-run accident that killed a woman and find the evidence points to murder. Later, a suspect in the beating death suggests that Danny is hiding a dark secret about his past. Also, a store clerk is gunned down in Spanish Harlem.
The body of a teen is found stuffed into a small box that washed ashore on Coney Island, and the investigation leads Mac and Stella into the world of circus performers. The probe reveals that the victim worked for a small traveling circus, but that he wanted to break free from it. Back in the city, a large pool of blood is discovered in a missing woman's studio apartment, but no body is found. Bernardo: Jim Pirri. Anasuya: Katie Chonacas. Maxwell: Mark Ivanir. Jake: Michael Maize.
A bride falls dead just as she is about to walk down the aisle to marry a wealthy groom, and Mac believes she may have been poisoned. In an abandoned Staten Island monastery rumored to be haunted, a severed human hand is found near a dead man who apparently chewed it off to free himself after being cuffed to a wall. The investigation reveals that the man was an ex-con and was digging for something just before he was chained to the wall and left for dead.
Half of a human torso is found smashed beneath a huge shipping container on a flatbed trailer leaving a marine terminal at New York Harbor. Mac and Stella investigate and soon discover the other half of the body on the docks. In Queens, Danny and Aiden probe the death of a woman found nude near an expressway. She apparently was hit by a vehicle that ran into a nearby tree.
A prominent and much-feared movie producer is found dead after apparently falling from a Chelsea apartment terrace. In the Bronx, a wineshop owner is murdered by a trio of gang members during a robbery. Flack's former training officer is assigned to the Bronx case and may be guilty of tampering with evidence at the scene. Back in Chelsea, Danny and Aiden learn that the dead moviemaker wasn't well liked and had more enemies than friends.
A commissioner who coauthored a report exposing corruption in the New York City police department is gunned down at a party the night before the document is to be released. Also killed is a woman with whom the commissioner was dancing. Further uptown, a gypsy cabdriver is found dead in his taxi, apparently the victim of a robbery gone awry. Constance: Alanna Ubach. Sherman: David Packer. Savannah: Patrice Fisher. Baxter: Clay Wilcox. Donna: Joy Gohring.
The body of a woman whose throat has been slit tumbles out of a dirty wash bag at an industrial laundry facility. The investigation reveals she was murdered in an expensive hotel suite where a UN trade representative is staying. Downtown, Danny probes the death of a street performer who apparently died on the job while standing like a statue all day to earn tips. Later, Mac orders Danny to pass the case off to someone else, but Danny refuses to do so.
A college student, who apparently got on the wrong side of drug dealers, is beaten and shot to death in his West Village apartment. Later, Stella gets into trouble with Internal Affairs after she relentlessly questions a teenage suspect and shoves a grisly autopsy photo in the girl's face. It's the fourth complaint filed against Stella in the past three years, and it leads to an angry confrontation between her and Mac. Jordan: Lindsay Parker. Lipstone: Amy Aquino. Willingham: Chad Lindberg.
Internal Affairs investigates after Danny kills an undercover cop he believed was a suspect he had chased down on a subway platform. Danny claims the victim shot first. Before the chase, Danny and Mac were examining a dead body in an apartment where they first encountered the suspect. Meanwhile, in Central Park, Stella probes the murder of a nanny, who was killed in a public restroom by a blow to the head.
An attractive sports agent is struck and killed by a delivery truck when she runs from an unseen assailant in an alley. Also, a Boston Red Sox fan is found dead in his truck near Yankee Stadium after a game between the rival teams. Later, even though Mac has already testified, a man being tried for murder asks him to take another look at the evidence. Sullivan: Michael Clarke Duncan. Margo: Danielle Burgio. DeRosa: Amaury Nolasco. Sweet: Andrew Bowen.
Mac witnesses a shoot-out in a coffee shop where he's a regular. One patron dies and a waitress is critically wounded. After the gunman escapes, Mac must decide whether to chase the killer or tend to the wounded waitress. As the probe unfolds, Mac learns that the motive wasn't robbery, but something much bigger. Rose: Penelope Ann Miller. Collins: Garret Dillahunt. Amy: Emily Harrison. Madoff: Dave Power.