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26 Episodes 2008 - 2009
The fourth season of the CBS procedural "Criminal Minds" follows the Behavioral Analysis Unit as they deal with a number of dangerous cases including a series of murders that look like the work of a serial killer who was executed at the time these new murders transpired; terrorists who blow up a vehicle carrying BAU member Hotch (Thomas Gibson), an event that causes him substantial hearing problems; and Reid (Matthew Gray Gubler) becomes haunted by his past while investigating the murder of a boy. Guest stars this season include Jason Alexander, Wil Wheaton, C. Thomas Howell, and William Mapother.
Episode 1
Wed, Sep 24, 2008 60 mins
The fourth-season opener follows the aftermath of the bombing in New York City. Two team members are injured and the rest of the team hunt for terrorists who may be planning a bigger attack.
Episode 2
Thu, Oct 2, 2008 60 mins
The team investigates recent murders that are connected to a serial killer who was executed.
Episode 3
Wed, Oct 8, 2008 60 mins
Prentiss and Reid are held captive at a cult compound when they go undercover to investigate potential child abuse.
Episode 4
Wed, Oct 22, 2008 60 mins
The team searches for a serial killer who stages his murders to look like car accidents.
Episode 5
Wed, Oct 29, 2008 60 mins
The team hunts a serial killer targeting people who live near the railway. Jordan Todd: Meta Golding. Kevin Liman: James Black.
Episode 6
Wed, Nov 5, 2008 60 mins
The case of an abducted child in Las Vegas prompts Reid to have unusual dreams that help him unlock some secrets from his childhood.
Episode 7
Wed, Nov 12, 2008 60 mins
Reid conducts a solo investigation of a boy's murder that happened years earlier, believing the case has a link to his own childhood.
Episode 8
Wed, Nov 19, 2008 60 mins
A serial killer turns himself in, and the team must profile him in order to find unaccounted victims who are still alive, but may not be for long.
Episode 9
Wed, Nov 26, 2008 60 mins
Prentiss and Todd go undercover to find a serial killer who uses his fine-tuned pickup skills to ensnare women.
Episode 10
Wed, Dec 10, 2008 60 mins
The team searches for a serial killer who is targeting cops in Phoenix. The case is very personal for former police officer Morgan. Cdr. Marks: Joe Regalbuto.
Episode 11
Wed, Dec 17, 2008 60 mins
The team heads to Southern California to search for a serial killer nicknamed the Road Warrior, who is targeting luxury-car owners on the freeway. Faith Ford and Mitch Pileggi guest star.
Episode 12
Wed, Jan 14, 2009 60 mins
A young woman disappears from her affluent Atlanta neighborhood, and the team believes someone in the community is responsible and may have had an accomplice. William Harris: Michael Boatman. Andrea Harris: Dana Davis.
Episode 13
Wed, Jan 21, 2009 60 mins
A family is suspected of working together to abduct young women.
Episode 14
Wed, Feb 11, 2009 60 mins
The team searches for a killer who embalms his victims in order to spend more time with them. Mrs. Gless: Cybill Shepherd. Det. Fullwood: Michael Biehn.
Episode 15
Wed, Feb 18, 2009 60 mins
The team pursues a copycat murderer who is duplicating the methods of infamous serial killers.
Episode 16
Wed, Feb 25, 2009 60 mins
The team searches for a prostitute who is luring and murdering business executives.
Episode 17
Wed, Mar 11, 2009 60 mins
A string of deaths with religious undercurrents is investigated, and Prentiss has a personal tie to the case.
Episode 18
Wed, Mar 18, 2009 60 mins
One of New England's deadliest serial killers may be murdering again after a 10-year hiatus, leading Hotchner to revisit his first case with the BAU. George Foyet: C. Thomas Howell.
Episode 19
Wed, Mar 25, 2009 60 mins
A small town is terrorized by a serial arsonist targeting community meeting places.
Episode 20
Wed, Apr 8, 2009 60 mins
The team travels to South Padre Island, Texas, where a serial killer is targeting students on spring break. Adam: Jackson Rathbone. Det. Evans: Roma Maffia.
Episode 21
Wed, Apr 22, 2009 60 mins
A serial killer preying on children is in custody, but the case takes a twist when it's discovered that one of the murders may have been committed by someone else.
Episode 22
Wed, Apr 29, 2009 60 mins
A serial killer sends the team a videotape recounting one of his murders--and also asking for help to stop killing. Vincent: Alex O'Loughlin.
Episode 23
Thu, May 7, 2009 60 mins
The team search for a serial killer who murders victims with his car.
Episode 24
Wed, May 13, 2009 42 mins
A killer releases a deadly virus into the open air, and one of the agents risks his life to stop the threat. Lee Whitworth: Dan Lauria.
Episode 25
Wed, May 20, 2009 60 mins
Part 1 of 2. The team hunts for a serial killer in Detroit who targets those on the fringe of society.
Episode 26
Wed, May 20, 2009 60 mins
Conclusion. In the fourth-season finale, the team searches for the killer in Canada, and an agent's life is threatened.