David Labiosa

At the request of Detective Mikki Mendoza (recurring guest star Paola Turbay - The Secret Life of the American Teenager, Cane), the squad becomes involved in investigating a series of brutal murders that indicate a Mexican drug cartel may have moved into the city.

Megan Donner returns to the CSI unit in time to work on a jet crash in the Everglades.

Warrick's appearance at the preliminary hearing on a rape and murder case goes terribly wrong when the only piece of evidence is thrown out on a technicality.

George feels guilty for inadvertently getting a busboy fired from his job and then tries to make it up to him. Meanwhile, Elaine spends the week with an old boyfriend who is visiting her from out of town.

Jack finds Kyle's bag of suspicious white powder; Palmer learns more about the incriminating allegations against Anne; Chase chafes at being shut out of Jack's pursuit of Kyle.

When the CTU loses track of Kyle, and Palmer fears he'll have to either give into the terrorists' demands or face a catastrophic virus outbreak, Jack proposes a risky third alternative.