Season 4

October 22, 2008

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

October 29, 2008

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.

November 5, 2008

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.

November 12, 2008

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

November 19, 2008

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.

November 26, 2008

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

December 10, 2008

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.

December 17, 2008

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

January 14, 2009

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

January 21, 2009

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

February 11, 2009

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

February 18, 2009

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

February 25, 2009

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.

March 11, 2009

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

March 18, 2009

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.

March 25, 2009

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.

April 8, 2009

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

April 22, 2009

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.

April 29, 2009

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.

May 6, 2009

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

May 13, 2009

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.

May 20, 2009

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.

May 20, 2009

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.