Criminal Minds season 4
Criminal Minds season 4: 26 listed episodes, with episode titles, original air dates and optional synopses.
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Season 4 · Episode 1
Mayhem
· 60 min
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When an SUV carrying members of the BAU explodes, the rest of the team fights to save their colleagues and catch the terrorists responsible for the bombing.
Season 4 · Episode 2
The Angel Maker
· 60 min
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When a series of murders are linked to a serial killer who was executed a year ago, the BAU must find the connection between him and the current killing spree.
Season 4 · Episode 3
Minimal Loss
· 60 min
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When Prentiss and Reid go undercover to investigate possible child abuse at an underground cult, they get trapped inside the compound when a federal raid goes bad.
Season 4 · Episode 4
Paradise
· 60 min
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Serial killer who disguises his victims' demise by creating car accidents to mask their earlier deaths is the subject of a BAU manhunt.
Season 4 · Episode 5
Catching Out
· 60 min
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Serial killer who jumps trains and targets people living near the railway is the subject of a BAU manhunt.
Season 4 · Episode 6
The Instincts
· 60 min
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While investigating the kidnapping of a young boy in Las Vegas, Dr. Reid begins to have dreams that may help reveal some buried memories from his childhood.
Season 4 · Episode 7
Memoriam
· 60 min
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Dr. Reid embarks on his own investigation into the murder of a young boy years earlier in Las Vegas that he strongly believes has a connection to his own childhood.
Season 4 · Episode 8
Masterpiece
· 60 min
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The team must profile a self-confessed serial killer who turns himself in, but sends them on a massive manhunt to find his latest victims before it is too late.
Season 4 · Episode 9
52 Pickup
· 60 min
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Agents Prentiss and Todd go undercover to profile a pickup artist who uses his skills of persuasion to lure women into danger.
Season 4 · Episode 10
Brothers in Arms
· 60 min
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Case hits close to home for Morgan, who was a cop before joining the team, when a serial killer specifically focuses on members of the police force in Phoenix, Arizona.
Season 4 · Episode 11
Normal
· 60 min
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The team investigates a serial killer dubbed "The Road Warrior," a suspect who kills luxury car owners while they are driving on freeways in Southern California.
Season 4 · Episode 12
Soul Mates
· 60 min
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The BAU team suspects a member of an affluent community in Atlanta is responsible for the disappearance of a local young woman and that the suspect may have worked with an accomplice.
Season 4 · Episode 13
Bloodline
· 60 min
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The BAU team becomes involved in the case of a family working together to abduct young women.
Season 4 · Episode 14
Cold Comfort
· 60 min
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The team searches for a killer who embalms his victims in order to spend more time with them.
Season 4 · Episode 15
Zoe's Reprise
· 60 min
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The team pursues a copycat murderer who is duplicating the methods of infamous serial killers.
Season 4 · Episode 16
Pleasure is My Business
· 60 min
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The team searches for a prostitute who is luring and murdering business executives.
Season 4 · Episode 17
Demonology
· 60 min
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A string of deaths with religious undercurrents is investigated, and Prentiss has a personal tie to the case.
Season 4 · Episode 18
Omnivore
· 60 min
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Agent Hotchner revisits the first case he worked at the BAU when details come forth that one of the deadliest serial killers in New England's history has struck again after a 10-year hiatus.
Season 4 · Episode 19
House on Fire
· 60 min
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The BAU team must track down a serial arsonist who instills fear in a small town by setting fire to community meeting places and killing several residents in the process.
Season 4 · Episode 20
Conflicted
· 60 min
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The team travels to South Padre Island during spring break to find a serial killer who is targeting college students on vacation.
Season 4 · Episode 21
A Shade of Gray
· 60 min
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When profiling a series of child abductions and murders, the team discovers that one of the cases may not be the handiwork of the serial killer they apprehended.
Season 4 · Episode 22
The Big Wheel
· 60 min
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When the team is sent a videotape from a serial killer detailing one of his crimes, they discover a hidden message asking them to help him stop his murderous ways.
Season 4 · Episode 23
Roadkill
· 60 min
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An unsub who kills with his car is the subject of a BAU investigation.
Season 4 · Episode 24
Amplification
· 60 min
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When a new type of chemical warfare is released into the open air, the BAU must act quickly to find the source before any more innocent people are exposed.
Season 4 · Episode 25
To Hell...and Back (1)
· 60 min
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The team hunts for a serial killer in Detroit who targets those on the fringe of society.
Season 4 · Episode 26
To Hell...and Back (2)
· 60 min
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The team searches for the killer in Canada, and an agent's life is threatened.
Episode information and images from TVmaze, used under CC BY-SA 4.0. Episode lists follow original airing order and omit specials. Dates checked September 10, 2026.