Criminal Minds - Season 4 Episode Guides (2008)

The BAU tracks a serial killer who chooses junkies, prostitutes and the homeless off the streets of Detroit as his victims and takes them across the border into Canada, and an agent's life is in peril.

Episode Guide

To Hell...And Back Part 1

Season 4, Episode 25 - Air Date: 5/19/2009

Episode Guide

Amplification

Season 4, Episode 24 - Air Date: 5/13/2009

When a new type of chemical warfare is released into the open air, the BAU must act quickly to find the source before any more innocent people are exposed.

Episode Guide

Roadkill

Season 4, Episode 23 - Air Date: 5/6/2009

An unsub who kills with his car is the subject of a BAU investigation.

Episode Guide

The Big Wheel

Season 4, Episode 22 - Air Date: 4/29/2009

When the team is sent a videotape from a serial killer detailing one of his crimes, they discover a hidden message asking them to help him stop his murderous ways.

Episode Guide

A Shade of Gray

Season 4, Episode 21 - Air Date: 4/22/2009

When profiling a series of child abductions and murders, the team discovers that one of the cases may not be the handiwork of the serial killer they apprehended.

Episode Guide

Conflicted

Season 4, Episode 20 - Air Date: 4/8/2009

The team travels to Fort Lauderdale during spring break to find a serial killer with multiple personalities who is targeting co-eds on vacation.

Episode Guide

House on Fire

Season 4, Episode 19 - Air Date: 3/25/2009

The BAU team must track down a serial arsonist who instills fear in a small town by setting fire to community meeting places and killing several residents in the process.

Episode Guide

Omnivore

Season 4, Episode 18 - Air Date: 3/18/2009

Agent Hotchner revisits the first case he worked at the BAU when details come forth that one of the deadliest serial killers in New England's history has struck again after a 10-year hiatus.

Episode Guide

Demonology

Season 4, Episode 17 - Air Date: 3/11/2009

Agent Prentiss has a personal connection to one of the victims in a series of deaths with religious overtones.

Episode Guide

Pleasure Is My Business

Season 4, Episode 16 - Air Date: 2/24/2009

The team searches for a female suspect who uses her professional skills as a high class call girl to lure and kill high-powered executives.

Episode Guide

Zoe's Reprise

Season 4, Episode 15 - Air Date: 2/18/2009

The team pursues a copycat serial killer who is recreating the techniques used by past famous murderers.

Episode Guide

Cold Comfort

Season 4, Episode 14 - Air Date: 2/11/2009

The mother of an abducted child works with the BAU to apprehend a serial killer who kidnaps, murders, and embalms his victims.

Episode Guide

Bloodline

Season 4, Episode 13 - Air Date: 1/21/2009

The BAU team becomes involved in the case of a family working together to abduct young women.

Episode Guide

Soul Mates

Season 4, Episode 12 - Air Date: 1/14/2009

The BAU team suspects a member of an affluent community in Atlanta is responsible for the disappearance of a local young woman and that the suspect may have worked with an accomplice

Episode Guide

Normal

Season 4, Episode 11 - Air Date: 12/18/2008

An unsub kills blondes driving luxury cars on L.A. freeways.

Episode Guide

Brothers in Arms

Season 4, Episode 10 - Air Date: 12/10/2008

The BAU team hunts for a serial killer who targets members of the police department in Phoenix, Ariz.

Episode Guide

52 Pickup

Season 4, Episode 9 - Air Date: 11/26/2008

Agents Prentiss and Todd go undercover to profile a serial killer who uses skills of persuasion to lure women into danger.

Episode Guide

Masterpiece

Season 4, Episode 8 - Air Date: 11/19/2008

When a narcissistic psychopath confesses he has killed seven people and more will die, the team must locate his latest victims before it is too late.

Episode Guide

Memoriam

Season 4, Episode 7 - Air Date: 11/12/2008

As Reid's investigation of a young boy's murder in Las Vegas continues, he discovers possible connections to his own past.

Episode Guide

The Instincts

Season 4, Episode 6 - Air Date: 11/5/2008

While investigating the abduction of a young boy in Las Vegas, Dr. Reid starts to have dreams that might help reveal buried memories from his childhood.

Episode Guide

Catching Out

Season 4, Episode 5 - Air Date: 10/29/2008

The BAU investigates a series of murders that appear to be connected to a killer who jumps trains and chooses his victims based on their proximity to the railway.

Episode Guide

Paradise

Season 4, Episode 4 - Air Date: 10/22/2008

The BAU joins the manhunt to catch a serial killer who conceals the manner of his crimes by staging car accidents.

Episode Guide

Minimal Loss

Season 4, Episode 3 - Air Date: 10/8/2008

Reid and Prentiss are taken hostage when they go under cover to investigate possible child abuse at an underground cult.

Episode Guide

The Angel Maker

Season 4, Episode 2 - Air Date: 10/1/2008

A series of murders is linked to a serial killer executed a year earlier, and the BAU team must find the link between the dead killer and the new spate of crimes.

Episode Guide

Mayhem

Season 4, Episode 1 - Air Date: 9/24/2008

When an SUV carrying members of the team explodes, the rest of the team fights to save them and catch the terrorists responsible for the bombing.

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To Hell...And Back Part 2

To Hell...And Back Part 1

Amplification

Roadkill

The Big Wheel

A Shade of Gray

Conflicted

House on Fire

Omnivore

Demonology

Pleasure Is My Business

Zoe's Reprise

Cold Comfort

Bloodline

Soul Mates

Normal

Brothers in Arms

52 Pickup

Masterpiece

Memoriam

The Instincts

Catching Out

Paradise

Minimal Loss

The Angel Maker

Mayhem

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