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Poster for CSI: Crime Scene Investigation · Season 12

CSI: Crime Scene Investigation

CSI: Crime Scene Investigation: Season 12

  • 2011
  • 22 episodes
  • 43m

With new supervisor D.B. Russell at the helm, the CSI team continues to use its advanced forensic methods to crack the most baffling cases.

Season 12 of CSI: Crime Scene Investigation premiered on September 21, 2011 and has 22 episodes, from "73 Seconds" to "Homecoming". The last episode aired on May 9, 2012.

Where to watch CSI: Crime Scene Investigation

In the United States, you can stream CSI: Crime Scene Investigation on Hulu and Paramount Plus. It is also free on The Roku Channel. You can also buy it on Amazon Video, Apple TV Store, Google Play Movies and Fandango At Home. It is on streaming services in 36 countries.

Where to watch

Episodes

  1. Episode 173 SecondsAired September 21, 2011

    After multiple attacks on a public tram, the team has just one witness and a lot of questions.

    • 44m
    • Directed by Alec Smight
    • Written by Gavin Harris

    Guest stars

  2. Episode 2Tell-Tale HeartsAired September 28, 2011

    When three people confess to killing a family, the team must decide who is telling the truth.

    • 44m
    • Directed by Brad Tanenbaum
    • Written by Larry Mitchell and Joe Pokaski

    Guest stars

    • Marg Helgenberger Catherine Willows
    • Wallace Langham David Hodges
    • Elisabeth Harnois Morgan Brody
    • David Berman David Phillips
    • James Harvey Ward John Lee
    • Amy Davidson Leslie Gitig
    • Jaime Gomez Officer Andy Cantelvo
    • Brooke Serene Butler Alison
  3. Episode 3BittersweetAired October 5, 2011

    During a date, Stokes discovers decomposing body parts in part of an art exhibit; D.B. Russell deals with a staff member confrontation.

    • 43m
    • Written by Treena Hancock and Melissa R. Byer

    Guest stars

  4. Episode 4Maid ManAired October 12, 2011

    The investigators attend the gala grand opening of a mob museum, only to witness an attempted hit on mob lawyer and former mayor Oscar Goodman.

    • 44m
    • Directed by Martha Coolidge
    • Written by Dustin Lee Abraham

    Guest stars

  5. Episode 5CSI DownAired October 19, 2011

    The CSI unit investigates when Frank, an apparent murder victim, sits up and needs help but is he just another victim?

    • 43m
    • Directed by Jeffrey G. Hunt
    • Written by Tom Mularz and Gavin Harris

    Guest stars

  6. Episode 6Freaks & GeeksAired November 2, 2011

    The murder of a popular sideshow performer sends the team behind the scenes at a carnival freak show.

    • 43m
    • Directed by Alec Smight
    • Written by Christopher Barbour

    Guest stars

  7. Episode 7Brain DoeAired November 9, 2011

    The CSI crew is stumped when they discover a disembodied brain at a crime scene where all the other brains are accounted for.

    • 44m
    • Directed by Brad Tanenbaum
    • Written by Gavin Harris

    Guest stars

    • Marg Helgenberger Catherine Willows
    • Wallace Langham David Hodges
    • Elisabeth Harnois Morgan Brody
    • David Berman David Phillips
    • Robyn Lively Joyce Dempsey
    • Kai Caster Declan Dempsey
    • Jeanine Mason Gween Seligson
    • Victor Webster Bill Pernin
  8. Episode 8Crime After CrimeAired November 16, 2011

    Three new murders related to three unsolved (or incorrectly solved) crimes from the past come back to haunt the CSIs.

    • 43m
    • Directed by Paul McCrane
    • Written by Tom Mularz and Richard Catalani

    Guest stars

  9. Episode 9ZipperedAired December 7, 2011

    The murder of a retired Army Ranger brings the FBI in on the case, to Russell and Catherine's initial chagrin.

    • 44m
    • Directed by Alec Smight
    • Written by Joe Pokaski

    Guest stars

  10. Episode 10Genetic DisorderAired December 14, 2011

    When a man's dead body turns up naked in the bed of Doc Robbins' wife, the detectives try to "just work the scene" without bringing their pre-judgments to the table, but it sure looks like a case of Death During Adultery.

    • 44m
    • Written by Elizabeth Devine

    Guest stars

  11. Episode 11Ms. Willows Regrets... (1)Aired January 18, 2012

    Catherine's friend Laura's mogul husband Mark has a lot to hide behind his successful international corporation, and he's hired a crack team of assassins to carry out the murders of anyone who might be aware of what he's doing, and that includes Laura's lawyer and Laura herself.

    • 44m
    • Directed by Louis Shaw Milito
    • Written by Christopher Barbour and Don McGill

    Guest stars

  12. Episode 12Willows in the Wind (2)Aired January 25, 2012

    The CSI team says goodbye to Catherine Willows as she makes a life-changing decision.

    • 44m
    • Directed by Alec Smight
    • Written by Christopher Barbour, Carol Mendelsohn, Richard Catalani and Don McGill

    Guest stars

  13. Episode 13Tressed to KillAired February 8, 2012

    When a woman is found dead and her hair is done up '70s style complete with vintage clothes, the CSI team discovers clues that point to a killer with a hair fetish.

    • 44m
    • Directed by Brad Tanenbaum
    • Written by Ed Whitmore

    Guest stars

  14. Episode 14Seeing RedAired February 15, 2012

    Russell seeks advice from a former colleague during an investigation into the death of a man's ex-girlfriend.

    • 43m
    • Written by Tom Mularz and Christopher Barbour

    Guest stars

  15. Episode 15Stealing HomeAired February 22, 2012

    When a house is stolen completely off its foundation, the CSIs are on the case in search of answers. Meanwhile, new CSI Julie Finlay showcases her skill in blood analysis.

    • 44m
    • Directed by Alec Smight
    • Written by Treena Hancock and Melissa R. Byer

    Guest stars

  16. Episode 16CSI UnpluggedAired February 29, 2012

    When a blackout cripples the city, the CSIs must revert to old-school methods to solve the case of a missing child.

    • 43m
    • Directed by Jeffrey G. Hunt
    • Written by Gavin Harris

    Guest stars

  17. Episode 17Trends with BenefitsAired March 14, 2012

    When a photo of a dead college student starts trending on the Internet, the team steps in to investigate.

    • 44m
    • Directed by Louis Shaw Milito
    • Written by Jack Gutowitz

    Guest stars

  18. Episode 18Malice in WonderlandAired March 21, 2012

    The team has few leads to go on when investigating a robbery-homicide at a themed wedding

    • 44m
    • Directed by Alec Smight
    • Written by Joe Pokaski

    Guest stars

  19. Episode 19Split DecisionsAired April 4, 2012

    When the CSI team is called in to investigate a man who is shot at point-blank range in a local casino, they shut down the entire building to find their killer.

    • 43m
    • Directed by Brad Tanenbaum
    • Written by Michael F.X. Daley and Richard Catalani

    Guest stars

  20. Episode 20Altered StakesAired April 11, 2012

    When Stokes learns that a man he helped put in prison is going to have his conviction overturned, the CSI team needs to prove the killer is guilty again or he will be released.

    • 44m
    • Directed by David Semel
    • Written by Elizabeth Devine, Melissa R. Byer and Treena Hancock

    Guest stars

  21. Episode 21Dune and GloomAired May 2, 2012

    When a bomb kills an off-road race truck driver mid-race, the CSI team is called on the scene to investigate why.

    • 43m
    • Directed by Jeffrey G. Hunt
    • Written by Tom Mularz

    Guest stars

  22. Episode 22HomecomingAired May 9, 2012

    The investigation of a triple homicide leads to the discovery of corruption running rampant throughout the LVPD. The closer they get to the truth, the more serious are the repercussions. To be continued...

    • 44m
    • Directed by Alec Smight
    • Written by Christopher Barbour, Don McGill and Larry Mitchell

    Guest stars

Season cast