Amazon-Video Comedy Central Showtime Apple TV+ DC Universe Disney Plus YouTube Premium HBO Max Peacock Netflix Vudu HBO Go Hulu Plus Amazon Prime CBS All Access Verizon

Join or Sign In

Sign in to customize your TV listings

Continue with Facebook Continue with email

By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.

CSI: Crime Scene Investigation Season 4 Episodes

23 Episodes 2003 - 2004

Some dangling plot strands left over from season 3 of CSI: Crime Scene Investigation are tied up in season 4; others are not, and of course, new complications ensue throughout the season's twenty three episodes. Facing surgery to correct (or at the very least forestall) his hereditary hearing loss, CSI team leader Gil Grissom (William L. Petersen) emerges from the operation somewhat better off, though his hearing is still not 100 percent. Struggling to overcome the death of her husband and relieved that injuries sustained by her daughter were not fatal, team member Catherine Willows (Marg Helgenberger) faces several other crises, not least of which is the discovery that unsavory casino owner Sam Braun (Scott Wilson) is in fact her biological father; a hefty check given to Catherine by Braun for her indirect assistance in helping him beat a murder rap also causes a great deal of soul-searching on her part, not to mention an embarrassing situation when she comes up for her annual departmental review. And the already seething tensions between Catherine and her fellow CSI'er Sara Sidle (Jorja Fox) are exacerbated by decisions made from the top pertaining to job assignments and promotions. Sara's inner demons threaten to overwhelm her by the end of season four, culminating in a drunk-driving charge that figures into the season-ending cliffhanger.

Episode 1

Assume Nothing

Thu, Sep 25, 2003 60 mins

In Part 1 of the two-part fourth-season opener, a woman is found murdered in a casino hotel room with her throat slit and her husband also turns up dead in his car. The investigation is compromised by Nick when he makes an error in judgment. There is also a surprising development in the Sam Braun case that leaves Catherine worried. Mandy: Sandra Hess. Cameron: Rudolf Martin. Natasha: Nicole Hiltz. Kent: Brian Bloom. Judge Slater: John Doman. Braun: Scott Wilson. Gardner: Scott Alan Smith.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 1 image

Episode 2

All for Our Country

Thu, Oct 2, 2003 60 mins

Conclusion. The investigation into the double homicide turns up two more murders and the evidence leads Grissom, Warrick and Nick to believe a police officer may be involved. Across town, Catherine and Sara probe the death of a college student found after several days in his still-running bathtub. Judge Slater: John Doman. Greg: Eric Szmanda. Robbins: Robert David Hall.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 2 image

Episode 3

Homebodies

Thu, Oct 9, 2003 60 mins

Grissom leads the investigation when the mummified remains of an elderly woman are discovered in a closed closet that the victim tried to claw through to get out. Meanwhile, Catherine links the discovery of a handgun in a yard to the shooting death of a bounty hunter in a park across town. Kirkwood: Stephen Root. Linda: Christine Romeo. Angela: Jeanette Brox. Emily: Mia Wesley. Foster: Vince Vieluf. Zeke: Tom Towles. Maddox: M.C. Gainey. Madeline: Lois Hall. Johnson: Thomas Wilson Brown.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 3 image

Episode 4

Feeling the Heat

Thu, Oct 23, 2003 60 mins

Catherine investigates the death of a baby who was left inside a locked car on a steamy day; Nick and Sara examine a lakeside scene where a young woman's body was found washed ashore; Warrick tries to determine whether a man found dead in a sweltering house was the victim of an accident or foul play. Sophia: Ryan Starr. Linda: Stacy Edwards. Mark: Cam Gigandet. Stone: Rick Ravanello. Morris: James Leo Ryan. Evelyn: Paula Newsome.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 4 image

Episode 5

Fur and Loathing

Thu, Oct 30, 2003 60 mins

Grissom and Catherine investigate a bizarre case in which a man dressed in a full-body raccoon suit is shot and then hit by a car along a dark stretch of highway. The woman driving the car is also killed when an 18-wheeler smashes into her vehicle. In town, Sara and Nick look into the murder of a man found shot and frozen in a warehouse's walk-in freezer. Greg: Eric Szmanda. Phillips: David Berman.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 5 image

Episode 6

Jackpot

Thu, Nov 6, 2003 60 mins

Grissom visits a small Nevada town to investigate the death of a man whose severed head was found by a dog in some nearby woods; and Catherine receives an unexpected and unwelcome gift from her dad, which prompts her to visit him. Sam: Scott Wilson. Grissom: William Petersen.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 6 image

Episode 7

Invisible Evidence

Thu, Nov 13, 2003 60 mins

Warrick is blindsided in court when a bloody knife he recovered from a suspected killer's car is determined to be inadmissible, leaving the CSIs only 24 hours to find new evidence before the accused murderer is set free. Atwater: Xander Berkeley. Fife: Christian Camargo. Rita: Kayren Butler. Quinn: James Marshall. Sinclair: Erik Jensen. Hodges: Wallace Langham. Margaret: Palmer Davis.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 7 image

Episode 8

After the Show

Thu, Nov 20, 2003 60 mins

Catherine takes the lead in finding a missing model, believed to be dead, after the prime suspect insists on talking only to her. The news doesn't sit well with Sara and Nick, who each hope to use the case to improve their chances of getting a promotion. Catherine: Marg Helgenberger. Sara: Jorja Fox.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 8 image

Episode 9

Grissom Versus the Volcano

Thu, Dec 11, 2003 60 mins

Sheriff Atwater suspects terrorists are responsible for a car bombing outside a casino that killed three people, but Grissom isn't so sure, even though the man driving the vehicle was a federal marshal. Across town, Sara and Warrick investigate the death of a popular entertainer's wife, who is found floating in a hot tub while her husband is performing on-stage. Atwater: Xander Berkeley. Phillips: David Berman. Robbins: Robert David Hall. Greg: Eric Szmanda.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 9 image

Episode 10

Coming of Rage

Thu, Dec 18, 2003 60 mins

Grissom investigates the murder of a 15-year-old boy found beaten to death at a construction site, possibly with a hammer; Nick probes the fatal shooting of a newlywed outside of her new house while her husband and ex-hubby fought in the yard. Curtis: Brian A. Green. Dawson: Gerald McCullouch. Ashley: Kimberlee Peterson. Lizzo: Brian Sites. Stewart: Marcus Mitchell. Marlene: Roxanne Beckford. Natalie: Susan Chuang. Thomas: Basil Wallace.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 10 image

Episode 11

Eleven Angry Jurors

Thu, Jan 8, 2004 60 mins

A reviled juror is found dead in the jury room after refusing to go along with his 11 counterparts in voting a defendant guilty in a murder trial; a woman claims that her sister was murdered four years earlier by her brother-in-law who allegedly burned the body and threw the ashes into a river. Gibbons: Andy Powers. Faye: Ever Carradine. Lizette: Anne Betancourt. Durham: Dean Norris. Lana: Sarah Buxton. Bell: Jack Laufer. Jervis: Andy Berman. Tara: Susan May Pratt.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 11 image

Episode 12

Butterflied

Thu, Jan 15, 2004 60 mins

Grissom can't help but examine his feelings for Sara when a dead woman who bears an uncanny resemblance to her is discovered as part of a double murder he's investigating. A second dismembered body is soon located in nearby trash cans. Making the case tough to crack is the fact that the killer took extraordinary measures to clean up after himself. Debbie: Erinn Carter. Lurie: Kyle Secor. Kelly: Tinsley Holloway Grimes. Pike: Rich Hutchman. Mulligan: Jeff Sugerman. Tripton: Josh Stamberg.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 12 image

Episode 13

Suckers

Thu, Feb 5, 2004 60 mins

Grissom investigates a twist-filled case in which a priceless 17th-century Japanese samurai sword is stolen from a Vegas hotel. In the northern part of the city, Catherine and Warrick probe the death of a woman who appears to have been bitten by a vampire and her blood consumed by her attacker. Phillips: David Berman. Robbins: Robert David Hall.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 13 image

Episode 14

Paper or Plastic?

Thu, Feb 12, 2004 60 mins

Grissom confronts a nemesis on the police force when he probes an officer's role in a shooting spree inside a small grocery store that left five people dead. The same cop had threatened Grissom after Gil investigated LVPD involvement in a homicide. In the current case, the officer claims he gunned down two robbers and shot at a third masked suspect, but there is no evidence that a third thief was present. There is evidence, however, that a bullet from the cop's gun killed an innocent shopper.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 14 image

Episode 15

Early Rollout

Thu, Feb 19, 2004 60 mins

A popular Las Vegas club owner and his wife are gunned down outside of their plush estate. The investigation reveals that a fortune in jewelry was stolen and that the victims were once involved in the porn industry. Back at the lab, Catherine makes a startling confession to Grissom, and Brass questions Sara about an alleged health problem. Also: Warrick confronts Greg over unprofessional conduct after Greg shows up on the scene ill-prepared. Eric Szmanda. Brass: Paul Guilfoyle.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 15 image

Episode 16

Getting Off

Thu, Feb 26, 2004 60 mins

A well-dressed man driving an expensive car is murdered in a drug-infested neighborhood, but robbery apparently was not a motive; a dead clown is discovered stuffed inside of a huge truck tire at an auto junkyard; Grissom learns some surprising news about Dr. Robbins. Doodles: Kevin C. Carr. Buddy: Paul Dooley. Mindy: Heather Kafka. Jamal: Keram Malicki-Sanchez. Burnell: Ross Partridge. Sinclair: James Russo. Riley: Rocco Sisto. Divine: Debra Wilson. Merill: Judith Hoag. Al: Joe Chrest.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 16 image

Episode 17

XX

Thu, Mar 11, 2004 60 mins

A mutilated female body is discovered tied to the undercarriage of a bus carrying prisoners from a women's correctional facility after a severed arm flies out from beneath the vehicle and strikes a car. Catherine leads the investigation and at first believes the woman was escaping, but the evidence increasingly points to murder. Back in town, Warrick probes the death of a gambler who was stabbed multiple times in his brother's kitchen. Robbins: Robert David Hall. Warrick: Gary Dourdan.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 17 image

Episode 18

Bad to the Bone

Thu, Apr 1, 2004 60 mins

An intimidating, husky man is beaten to death in a casino men's room, apparently by a lone attacker. The investigation leads the CSIs to the slightly-built owner of a run-down motel where they find evidence of other crimes and murders, but few explanations. Robbins: Robert David Hall. Warrick: Gary Dourdan.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 18 image

Episode 19

Bad Words

Thu, Apr 15, 2004 60 mins

Catherine and Warrick suspect a serial arsonist is at work after a house fire kills a teenage girl in a neighborhood where there was a previous blaze a few days earlier; a champion at a popular word-game tournament is found dead of asphyxiation in a men's room and several tile letters are found in his throat and stomach. Jessica: Tracey Needham. Hodges: Wallace Langham. Sam: Max Jansen Weinstein. Kaufman: Christopher Shea. Pierce: Jason Kravitz. Jason: Andy Comeau. Clarke: Larry Poindexter.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 19 image

Episode 20

Dead Ringer

Thu, Apr 29, 2004 60 mins

Grissom discovers the dead body of a Los Angeles cop in the desert during a nighttime 120-mile relay race for police officers and the investigation turns up signs of foul play. Back at the hotel where the officers are staying, two more bodies are found in what appears to be a murder-suicide between male and female cops who may have been lovers. But Warrick and Sara believe it may be a double homicide. Greg: Eric Szmanda. Sara: Jorja Fox.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 20 image

Episode 21

Turn of the Screws

Thu, May 6, 2004 60 mins

Six people are killed when the cars of a roller coaster fly off of their tracks at an amusement park and land in a parking area. The investigation reveals that it wasn't an accident, but murder. Outside of town, the body of a 13-year-old girl is discovered near a lake and the probe uncovers evidence that she was murdered and her corpse dumped at the site. Greg: Eric Szmanda. Phillips: David Berman.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 21 image

Episode 22

No More Bets

Thu, May 13, 2004 60 mins

A man who cheated while winning more than $400,000 playing roulette at one of Sam Braun's casinos is later found dead in the desert. When Grissom learns of the connection to Braun, he dismisses Catherine from the case, but she finds it difficult to stay away. Back at the lab, Sara is hurt after she learns that Grissom selected Nick for a promotion instead of her. Braun: Scott Wilson. Landers: Maury Chaykin.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 22 image

Episode 23

Bloodlines

Thu, May 20, 2004 60 mins

A casino employee is beaten and raped on her way home from work, but she survives and identifies her attacker. Unfortunately, a DNA test sets him free and Grissom must wrestle with whether evidence can ever lie. Later, Grissom comes to the rescue of a co-worker who ends up on the other side of the law.

Where to Watch
CSI: Crime Scene Investigation, Season 4 Episode 23 image