While Langston testifies in the trial of a respected Congressman, new evidence sends the CSIs back to the lab to reopen the investigation.

The CSI team investigates a mad slasher who strikes without leaving a trace -- because he wears a form-fitting black latex suit that leaves not a molecule of evidence behind

The CSI's investigate a series of deaths related to an energy company's grotesque cover-up of tainted water.

The Crime Scene crew investigates the gruesome murder of a high-powered, widowed lawyer, while Ray faces that it is time to move on from his old life.

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

D.B. Russell leads the CSI team on a hunt to find his kidnapped granddaughter.

A spa weekend for Sara, Finlay and Morgan turns into a murder investigation and missing persons case when Finlay disappears, as the CSI team must piece together what happened in detail to find her.