Season 12
22 episodes · first aired 2011-09-21
| Still | # | Title | Overview | Air date | Rating |
|---|---|---|---|---|---|
 | 01 | 73 Seconds 2011-09-21 | After multiple attacks on a public tram, the team has just one witness and a lot of questions. | 2011-09-21 | 8.4 |
 | 02 | Tell-Tale Hearts 2011-09-28 | When three people confess to killing a family, the team must decide who is telling the truth. | 2011-09-28 | 8.6 |
 | 03 | Bittersweet 2011-10-05 | During a date, Stokes discovers decomposing body parts in part of an art exhibit; D.B. Russell deals with a staff member confrontation. | 2011-10-05 | 8.2 |
 | 04 | Maid Man 2011-10-12 | 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. | 2011-10-12 | 8.2 |
 | 05 | CSI Down 2011-10-19 | The CSI unit investigates when Frank, an apparent murder victim, sits up and needs help but is he just another victim? | 2011-10-19 | 8.3 |
 | 06 | Freaks & Geeks 2011-11-02 | The murder of a popular sideshow performer sends the team behind the scenes at a carnival freak show. | 2011-11-02 | 7.5 |
 | 07 | Brain Doe 2011-11-09 | The CSI crew is stumped when they discover a disembodied brain at a crime scene where all the other brains are accounted for. | 2011-11-09 | 6.7 |
 | 08 | Crime After Crime 2011-11-16 | Three new murders related to three unsolved (or incorrectly solved) crimes from the past come back to haunt the CSIs. | 2011-11-16 | 8.7 |
 | 09 | Zippered 2011-12-07 | The murder of a retired Army Ranger brings the FBI in on the case, to Russell and Catherine's initial chagrin. | 2011-12-07 | 7.9 |
 | 10 | Genetic Disorder 2011-12-14 | 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. | 2011-12-14 | 8.4 |
 | 11 | Ms. Willows Regrets... (1) 2012-01-18 | 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. | 2012-01-18 | 9.0 |
 | 12 | Willows in the Wind (2) 2012-01-25 | The CSI team says goodbye to Catherine Willows as she makes a life-changing decision. | 2012-01-25 | 7.3 |
 | 13 | Tressed to Kill 2012-02-08 | 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. | 2012-02-08 | 7.9 |
 | 14 | Seeing Red 2012-02-15 | Russell seeks advice from a former colleague during an investigation into the death of a man's ex-girlfriend. | 2012-02-15 | 7.4 |
 | 15 | Stealing Home 2012-02-22 | 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. | 2012-02-22 | 6.6 |
 | 16 | CSI Unplugged 2012-02-29 | When a blackout cripples the city, the CSIs must revert to old-school methods to solve the case of a missing child. | 2012-02-29 | 7.4 |
 | 17 | Trends with Benefits 2012-03-14 | When a photo of a dead college student starts trending on the Internet, the team steps in to investigate. | 2012-03-14 | 6.2 |
 | 18 | Malice in Wonderland 2012-03-21 | The team has few leads to go on when investigating a robbery-homicide at a themed wedding | 2012-03-21 | 8.1 |
 | 19 | Split Decisions 2012-04-04 | 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. | 2012-04-04 | 6.5 |
 | 20 | Altered Stakes 2012-04-11 | 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. | 2012-04-11 | 7.9 |
 | 21 | Dune and Gloom 2012-05-02 | When a bomb kills an off-road race truck driver mid-race, the CSI team is called on the scene to investigate why. | 2012-05-02 | 7.8 |
 | 22 | Homecoming 2012-05-09 | 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... | 2012-05-09 | 8.5 |
Ratings shown are community scores. Once OMDB is wired, these become per-episode IMDB values.