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24 Episodes 2012 - 2013
The BAU welcomes new linguistics expert Alex Blake (Jeanne Tripplehorn) to the team in Season 8. She is immediately put to work as the BAU travels to Texas to search for an escaped serial killer known as "The Silencer," who sews the mouths of his victims shut. But even more disturbing for the unit is evidence that someone is stalking every member of the BAU, secretly photographing and studying them. Eventually, he begins to replicate crimes that the BAU is solving and then he targets members of the team—and not everyone escapes his deadly intentions. Elsewhere, Rossi (Joe Mantegna) reconnects with his Marine Corps sergeant (Meshach Taylor) from Vietnam; Reid (Matthew Gray Gubler) begins making calls to a mysterious woman; and Morgan (Shemar Moore) revisits his childhood neighborhood in Chicago to search for a man who is targeting middle-age men. The investigation reveals that the suspect may be the same person who abused Morgan as a kid. As for Hotch (Thomas Gibson), he learns that his brother Sean (Eric Johnson) may be involved in a series of deaths related to ecstasy overdoses in Manhattan. Mark Hamill, Brad Dourif and Michelle Trachtenberg guest star.
Episode 1
Tue, Sep 25, 2012 60 mins
The eighth season begins with a search for an escaped serial killer in Texas who sews the mouths of his victims shut. Meanwhile, the BAU members welcome a new linguistics expert.
Episode 2
Tue, Oct 9, 2012 60 mins
The bodies of two seemingly unrelated victims are found just hours apart in San Diego and Los Angeles, and the investigations reveal that the crimes may have been committed by two killers working together.
Episode 3
Tue, Oct 16, 2012 60 mins
A Kansas family are murdered and another family from the state are abducted. The unit investigates to determine if there is a link between the two cases. Meanwhile, Hotch gets some surprising news from Beth.
Episode 4
Wed, Oct 24, 2012 60 mins
A legless body is found in the New Mexico desert and a second unwilling amputee shows up at a hospital. The team conducts a search to find the amateur surgeon before he can remove a limb from another unsuspecting victim. Meanwhile, Reid makes secret phone calls to a mystery woman.
Episode 5
Wed, Oct 31, 2012 60 mins
The unit investigates when four men go missing in rural Oregon and tries to determine what the common link is between them. Meanwhile, JJ gets upset when her son doesn't want to celebrate Halloween.
Episode 6
Tue, Nov 6, 2012 60 mins
The unit investigates when prostitutes in Miami are murdered in a similar style to local animals that are found dead. Meanwhile, Morgan tries to convince Reid to join the bureau's softball team in order to sharpen his athletic skills.
Episode 7
Tue, Nov 13, 2012 60 mins
The unit investigates when burned bodies of homeless people are found in California near the famous Santa Monica Pier. Meanwhile, Rossi reconnects with his former Marine sergeant.
Episode 8
Tue, Nov 20, 2012 60 mins
The unit searches for a missing school bus full of children that disappeared near Washington, DC.
Episode 9
Wed, Nov 28, 2012 60 mins
An attendee at a popular motivational-speaker's conference in Seattle is murdered and the speaker himself disappears soon afterward. Meanwhile, Garcia is puzzled when Morgan refuses to attend a dinner honouring an old family friend.
Episode 10
Wed, Dec 5, 2012 60 mins
A ritualistic killer is hunted after male bodies are found that have been physically altered. Meanwhile, Reid gets anxious at the prospect of meeting his mystery woman.
Episode 11
Tue, Dec 11, 2012 60 mins
A serial killer whose crimes closely match those of a murderer from 30 years ago is pursued. Meanwhile, the team learns that someone is tracking their cases and replicating crimes the unit is solving.
Episode 12
Tue, Jan 15, 2013 60 mins
Reid's girlfriend is kidnapped by a stalker, and the unit conducts a search to find her.
Episode 13
Tue, Jan 22, 2013 60 mins
Reid deals with a personal loss; the team heads to San Francisco to investigate victims found in the Mission District.
Episode 14
Tue, Feb 5, 2013 60 mins
A writer's daughters vanish on the anniversary of their mother's disappearance, which leads the BAU to investigate the man as a possible suspect.
Episode 15
Tue, Feb 19, 2013 60 mins
The unit travels to Texas where they discover murder victims whose watches are all set inaccurately. Meanwhile, the person stalking the team inches closer in his pursuit.
Episode 16
Tue, Feb 26, 2013 60 mins
Victims are found in Philadelphia who were killed in a similar style to victims of the Replicator, the BAU's stalker.
Episode 17
Tue, Mar 19, 2013 60 mins
The unit investigates victims who were documenting their personal lives and desires on blog posts and social media. Meanwhile, Kevin gets jealous when he learns that Garcia may have a new love interest.
Episode 18
Tue, Apr 2, 2013 60 mins
The BAU visits Morgan's childhood neighbourhood in Chicago to search for a man who is targeting middle-age men. The investigation reveals that the suspect may be the same person who abused Morgan as a kid.
Episode 19
Tue, Apr 9, 2013 60 mins
A gruesome discovery is made when a time capsule is opened 25 years after it was sealed in a small Colorado town. The unit investigates and the evidence suggests that the past crime may be linked to the present death of a local police officer.
Episode 20
Tue, Apr 30, 2013 60 mins
The murders of two male victims who were killed in a ritualistic manner are investigated. Meanwhile, Reid continues to grieve over Maeve's death.
Episode 21
Tue, May 7, 2013 60 mins
Nannies are kidnapped, along with the children they care for, in Los Angeles.
Episode 22
Wed, May 15, 2013 60 mins
The unit tracks a suspect who is targeting people in Detroit. Meanwhile, Blake's husband returns from overseas with a life-changing career proposition for her.
Episode 23
Wed, May 22, 2013 60 mins
The unit investigates deaths in New York City that are linked to apparent ecstasy overdoses, and Hotch's estranged brother is caught in the middle of the probe.
Episode 24
Wed, May 22, 2013 60 mins
The Replicator returns and targets a member of the BAU as the eighth season ends.