The team searches for a disturbed man after he kills several people at a pharmacy, hoping to learn what set him off before he harms anyone else.

The team profiles a killer targeting an emergency room doctor; Hotch goes missing.

The team hunts for a serial killer in Detroit who targets those on the fringe of society. ~ Bill Ecklund, All Movie Guide

In the fourth-season finale, the team searches for the killer in Canada, and an agent's life is threatened. ~ Bill Ecklund, All Movie Guide

A killer releases a deadly virus into the open air, and one of the agents risks his life to stop the threat. ~ Bill Ecklund, All Movie Guide

The team travels to Bend, Ore., to search for a serial killer who murders victims with his car. ~ Bill Ecklund, All Movie Guide

A serial killer sends the team a videotape recounting one of his murders -- and also asking for help to stop killing. ~ Bill Ecklund, All Movie Guide

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. ~ Bill Ecklund, All... Full summary

The team travels to South Padre Island, Texas, where a serial killer is targeting students on spring break. ~ Bill Ecklund, All Movie Guide

A small town is terrorized by a serial arsonist targeting community meeting places. ~ Bill Ecklund, All Movie Guide