Season 4

When an SUV carrying members of the team explodes, the rest of the team fights to save them and catch the terrorists responsible for the bombing.

2008-09-2440 min

A series of murders is linked to a serial killer executed a year earlier, and the BAU team must find the link between the dead killer and the new spate of crimes.

2008-10-0141 min

Reid and Prentiss are taken hostage when they go under cover to investigate possible child abuse at an underground cult.

2008-10-0842 min

The BAU joins the manhunt to catch a serial killer who conceals the manner of his crimes by staging car accidents.

2008-10-2240 min

The BAU investigates a series of murders that appear to be connected to a killer who jumps trains and chooses his victims based on their proximity to the railway.

2008-10-2940 min

While investigating the abduction of a young boy in Las Vegas, Dr. Reid starts to have dreams that might help reveal buried memories from his childhood.

2008-11-0542 min

As Reid's investigation of a young boy's murder in Las Vegas continues, he discovers possible connections to his own past.

2008-11-1240 min

When a narcissistic psychopath confesses he has killed seven people and more will die, the team must locate his latest victims before it is too late.

2008-11-1939 min

Agents Prentiss and Todd go undercover to profile a serial killer who uses skills of persuasion to lure women into danger.

2008-11-2641 min

The BAU team hunts for a serial killer who targets members of the police department in Phoenix, Ariz., a case that hits close to home for Morgan, a former cop.

2008-12-1039 min

The team investigates a serial killer who shoots luxury car owners on Southern California's freeways.

2008-12-1740 min

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

2009-01-1441 min

The BAU team becomes involved in the case of a family working together to abduct young girls.

2009-01-2142 min

The mother of an abducted child works with the BAU to apprehend a serial killer who kidnaps, murders, and embalms his victims.

2009-02-1142 min

The team pursues a copycat serial killer who is recreating the techniques used by past famous murderers.

2009-02-1842 min

The team searches for a female suspect who uses her professional skills as a high class call girl to lure and kill high-powered executives.

2009-02-2541 min

Agent Prentiss has a personal connection to one of the victims in a series of deaths with religious overtones.

2009-03-1142 min

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.

2009-03-1842 min

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.

2009-03-2539 min

The team travels to Fort Lauderdale during spring break to find a serial killer who is targeting co-eds on vacation.

2009-04-0841 min

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.

2009-04-2241 min

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.

2009-04-2942 min

An unsub who kills with his car is the subject of a BAU investigation.

2009-05-0641 min

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.

2009-05-1341 min

The BAU tracks a serial killer who chooses junkies, prostitutes and the homeless off the streets of Detroit as his victims and takes them across the border into Canada, and an agent's life is in peril.

2009-05-2041 min

The BAU tracks a serial killer who chooses junkies, prostitutes and the homeless off the streets of Detroit as his victims and takes them across the border into Canada, and an agent's life is in peril.

2009-05-2042 min