Episode 1: Extreme Aggressor
Original Air Date—22 September 2005
After a fourth woman is kidnapped in Seattle, the FBI's Behavioral Analysis Unit (BAU) is brought in to profile a serail killer before he murders his latest victim.
Episode 2: Compulsion
Original Air Date—28 September 2005
Jason Gideon's FBI profile team is called to an Arizona College campus where students and teachers fall victim to arson. However the pyromaniac profile doesn't quite apply: the culprit didn't make sure (s)he could enjoy the crimes by observing the victims perishing. Dr. Spencer Reid finds a better way to fit the facts with a rarer serial killer logic: a 'religious' compulsion, in this case both triggered and given form by a boundless obsession with the number three- if this theory holds true a third, possibly triple, arson is at hand...
Episode 3: Won't Get Fooled Again
Original Air Date—5 October 2005
When a copycat bomber starts terrorizing a Florida community, Gideon is forced to ask for help from an old foe -- a famous bomber in prison for killing six FBI Agents.
Episode 4: Plain Sight
Original Air Date—12 October 2005
The team profiles the Tommy Killer, who rapes and murders women forced to watch him in upper class houses, where he destroys status symbols. As soon as the press notices that detail, he makes a habit of quoting 17th century poetic ballads on Death conversing with its victims. They are confident enough about their profile of a resentful, skilled white middle class man to rule out a less well-organized black attacker but arrest the suspect to make Tommy manifest himself, alas by an untraceable phone call- which precisely provides a crucial clue.
Episode 5: Broken Mirror
Original Air Date—19 October 2005
One of a lawyer's identical twin daughters is kidnapped. The kidnapper contacts him and demands ransom money. The team's investigation, however, reveals that he doesn't really want the money, but both girls.
Season 1, Episode 6: L.D.S.K.
Original Air Date—2 November 2005
When the unit is brought in to identify a long-distance serial killer who is shooting victims at a certain time of day, word leaks to the press that the killer may be a cop.
Episode 7: The Fox
Original Air Date—9 November 2005
The search is on for a cunning mass murderer who takes families hostage just before they leave for vacation...and poses as the head-of-household just before killing them.
Episode 8: Natural Born Killer
Original Air Date—16 November 2005
The disappearance of an undercover officer in relation to a triple murder puts the BAU on the hunt of a possible serial killer who's turned it into a profession.
Episode 9: Derailed
Original Air Date—23 November 2005
In Texas, a group of passengers - including Agent Elle Greenaway - are held hostage on a train by a paranoid schizophrenic who believes the government is watching him.
Episode 10: The Popular Kids
Original Air Date—30 November 2005
The apparent death by Satanic ritual brings the BAU to a small town, and the profiling morphs into a search when it's learned that a teenage girl is missing.
Episode 11: Blood Hungry
Original Air Date—14 December 2005
With Gideon on crutches, and working out of Garcia's office, Hotchner takes the unit to a small southern town, searching for a killer with cannibalistic tendencies.
Episode 12: What Fresh Hell?
Original Air Date—11 January 2006
When a young girl is abducted from a park, the BAU team race agaisnt time to find her kidnapper, having learned from his profile that he will kill her within hours.
Episode 13: Poison
Original Air Date—18 January 2006
The patrons of a cafe' are hospitalized when it appears their food was spiked with massive amounts of LSD, but the team begins to suspect they were only a test group.
Episode 14: Riding the Lightning
Original Air Date—25 January 2006
Two days before the execution of a killer couple, Gideon becomes convinced that the condemned woman did not kill her son, but was protecting him from her husband.
Episode 15: Unfinished Business
Original Air Date—1 March 2006
After a retired BAU Agent publishes a book about a serial killer who eluded teh FBI twenty years ago, the murderer reappears and starts killing again.
Episode 16: The Tribe
Original Air Date—8 March 2006
Ritualistic murders in New Mexico appear to be the work of Native Americans, but the BAU team discover clues that point toward a cult trying to start a war.
Episode 17: A Real Rain
Original Air Date—22 March 2006
The team travels to Manhattan to work with the NYPD in tracking and apprehending a serial killer who is intent on dispensing his own style of vigilante justice.
Episode 18: Somebody's Watching
Original Air Date—29 March 2006
While in Hollywood for a conference with the LAPD, Reid is asked to help protect a young actress from a delusional stalker...and finds himself becoming attracted to her.
Episode 19: Machismo
Original Air Date—12 April 2006
The unit travels to Mexico to help a police chief prove that a local rapist and murderer of old women is something unheard of in Mexican culture - a serial killer.
Episode 20: Charm and Harm
Original Air Date—19 April 2006
A man who tortures and then drowns his female victims has been extremely hard to catch: he's wealthy, likeable, and is constantly changing appearances.
Episode 21: Secrets and Lies
Original Air Date—3 May 2006
The BAU team investigates a CIA counter-terrorism unit to identify a traitor who had a fellow agent murdered and who is trying to find and kill the unit's informant, a Saudi woman with two children who is in hiding.
Episode 22: The Fisher King: Part 1
Original Air Date—10 May 2006
The team members, while on separate vacations, are each sent taunting clues, drawing them into an elaborate game being masterminded by a mysterious figure.