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After years of pursuit and a countless number of murders, Langston comes face-to-face with serial killer Nate Haskell inside the house where his killing spree began, on the eleventh season finale.
This is the 250th episode of CSI. In it, Langston becomes more determined than ever to track down Nake Haskell.
Nate Haskell, the notorious "Dick & Jane" killer, resurfaces when he e-mails a disturbing video to the father of one of his brides, threatening to take her life.
It's the return of Melinda Clarke. This actress reprises her role of Lady Heather on this CSI episode.
A string of death takes over CSI this week. Has the team run across the cycle of homicide, a suicide, an accidental and a natural death all in one night?
An ex-cop is murdered in prison this week. The CSI team looks into the case and stumbles upon an interesting clue.
Zombie alert! Zombie alert! On this episode of CSI, two men initially pronounced dead somehow come back to life.
Justin Bieber is back for this episode of CSI. His character, a troubled teen, interacts with Nick.
Langston's wife pays a surprise visit to CSI this week. The character is played by Tracee Ellis Ross.
Marlee Matlin guest stars this week as Grissom's ex, while Phyllis Frelich comes on board as his mother. The episode's investigation centers on the death of the director of a scholarship foundation.
Dita Von Teese makes her first appearance on CSI this week. She plays a school teacher and forensics enthusiast who gets asked out by Nick.
Carot Top guest starred on the first CSI episode of 2011. Read on for a detailed rundown of "Man Up."
The team sets out to track down a pedophile this week. The man is suspected of killing a FBI agent's wife and also of kidnapping his children.
The unit attempts to determine whether or not a man's fall off a balcony was suicide or murder. Such a question makes for an interesting case on "Wild Life."
Detective Reed joins Langston and Stokes this week as they investigate the murder of two men. The victims were set to accuse a company of poisoning the drinking water of a farming town.
The team discovers shredded remains of a man this week. As a result, members find themselves with various suspects and must determine the true culprit.
Welcome to CSI, Katee Sackhoff! That actress debuted this week as a new detective, Frankie Reed. She assists the CSI team.
The CSI team looks into a murder at the home of Marta, someone considered a "level 5 hoarder" on this episode. Her house contains more than just possessions: there's more than one corpse.
Ann-Margaret guest stars on this episode of CSI. She plays a Vegas icon who is targeted by a serial killer.
CSI joins in on the vampire craze this week. On the episode "Blood Moon," major violence breaks out during a convention.
Catherine and Sara look into the death of a woman killed in a Las Vegas pool on this episode. Read on for a detailed recap of where things go from there.
Justin Bieber helped welcome fans to season 11 of CSI. He guest-starred on this episode, which we've provided a full recap of.