Episode 1 | Mayhem

As the city is on high alert, the team begins to believe that they have made a mistake with the profile and that everything the terrorists have done so far may in fact just have been diversion for something even bigger.

Episode 2 | The Angel Maker

On the anniversary of a serial killer's execution, a murder spree which appears to be connected to him begins and the team must try and understand his mind in order to stop it.

Episode 3 | Minimal Loss

Reid and Prentiss, having gone undercover into an underground cult to investigate child abuse, get trapped inside the compound when a state raid on it goes bad.

Episode 4 | Paradise

A serial killer targeting couples stages their bodies in a way to make their deaths look like car accidents.

Episode 5 | Catching Out

A man is jumping trains along Highway 99, brutally killing couples in their homes whenever he stops.

Episode 6 | The Instincts

A child abduction case in Las Vegas causes Reid to have strange nightmares which appear to be connected to an event in his past.

Episode 7 | Memoriam

Driven by his nightmares, Reid stays behind in Las Vegas to find his father in order to find out the truth about Riley Jenkins' murder.

Episode 8 | Masterpiece

A serial killer turns himself in and challenges the team to find five people he has hidden somewhere before they die.

Episode 9 | 52 Pickup

A greatly sadistic serial killer who disembowels women and forces them to clean it up before killing them proves difficult to catch thanks to his social charm and simple, yet clever, disguises.

Episode 10 | Brothers in Arms

Morgan, an ex-cop, takes it personally when a serial killer targets police officers in Phoenix, Arizona.

Episode 11 | Normal

A serial killer known as the Road Warrior is gunning down blonde women on roads in Orange County, California and the BAU suspect that the victims are surrogates and that it's only a matter of time before he kills the real one.

Episode 12 | Soul Mates

The team suspects that a member of an affluent community is responsible for the disappearance of a young woman.

Episode 13 | Bloodline

A family consisting of two parents and their son break into a home, kill the parents and kidnap their daughter. As the investigation proceeds, the BAU team begin to suspect that what they're dealing with is bigger than they thought.

Episode 14 | Cold Comfort

A serial killer in the Olympia, Washington area has abducted four blonde, twenty-something women. When the third victim is found embalmed, the BAU are called in and suspect that the embalming is a way for him to spend more time wi...

Episode 15 | Zoe's Reprise

A copycat serial killer is recreating murder techniques used by famous killers from the past.

Episode 16 | Pleasure Is My Business

A high priced call girl that is killing her clients must be found and stopped.

Episode 17 | Demonology

Prentiss learns from an old friend, John Cooley, that their mutual friend, Matthew Benton, just died from a heart attack. Prentiss had not seen either man in several years, both for different reasons. John also mentions that Matth...

Episode 18 | Omnivore

After being inactive for 10 years, Hotch's first BAU case, an elusive serial killer known as the Reaper, starts killing again.

Episode 19 | House on Fire

When the kill count of a mass-murdering arsonist active in a small town reaches 31, the BAU are called in.

Episode 20 | Conflicted

Male college students on spring break are being raped and murdered, presumably by a man and a woman working together. The BAU are called in and suspect a shy hotel cleaner and a receptionist.

Episode 21 | A Shade of Gray

An AMBER alert is activated for a young boy in Cherry Hill, New Jersey and the BAU suspect it to be the work of a pedophile who has abducted and killed two other boys.

Episode 22 | The Big Wheel

The team tracks down a highly obsessive-compulsive killer who targets blonde women and leaves messages to the police asking them to stop him.

Episode 23 | Roadkill

A serial killer in Bend, Oregon is deliberately killing people by running them over with his car.

Episode 24 | Amplification

The BAU co-work with the U.S. Army to find the perpetrator behind an anthrax attack on a park in Annapolis, Maryland.

Episode 25 | To Hell...

The team head to Canada to investigate the disappearances of a number of homeless people, drug users and sex workers and uncover something horrific.

Episode 26 | ...And Back

The team head to Canada to investigate the disappearances of a number of homeless people, drug users and sex workers and uncover something horrific in part two of the season finale.