Season 4 Episode 23 – Roadkill
Local authorities summon the assistance of the BAU after a series of homicides occur that appear to have been caused by a serial killer's car near Bend, Oregon.
Local authorities summon the assistance of the BAU after a series of homicides occur that appear to have been caused by a serial killer's car near Bend, Oregon.
When a serial killer sends a videotape of one of his crimes to the BAU, the team discovers a hidden message from the murderer begging for help in stopping the killing.
During an investigation of a series of child abductions and murders, the BAU concludes there is a possibility that one of the kidnappings may not be the work of the serial killer who had been apprehended.
The BAU is called to Texas to investigate a serial killer who is targeting vacationing students on spring break on South Padre Island.
The BAU is summoned to Indiana by local authorities when a serial arsonist threatens the residents of a small town by setting fire to community meeting places that kills several people.
The BAU travels to Boston when the serial killer from one of SSA Aaron Hotchner's first cases, which involved one of the most notorious murderers in the history of New England, returns after 10 years.
The BAU is called to investigate a series of deaths involving exorcisms that appear to be sanctioned by the Vatican, and SSA Emily Prentiss finds herself personally involved in the case.
The team searches for a prostitute who is luring and murdering business executives.
The team pursues a copycat murderer who is duplicating the methods of infamous serial killers.
The mother of a suspect in a murder case works with the BAU to apprehend a serial killer who kidnaps, murders, and embalms his victims.