Jennifer Jalene

The Behavioral Analysis Unit must help identify and catch a serial bomber terrorizing the city of Seattle. Through their investigation, the BAU meets Professor Kent (JoBeth Williams), the author of a science fiction novel that denounces technology and has become a type of guidebook for the bomber. With her help, the team attempts to figure out why these sites are chosen as targets before anyone else is seriously injured.

Lightman is called to testify in the trial of a beautiful widow accused of murdering her much older husband.

Andy tracks down a witness to testify at her trial; Carina and Maya deal with a stressful situation; the crew responds to a car wreck.

MacGarrett and Danny finally track down the missing Uranium, which has been used to build a bomb located in the middle of the jungle. Now, they must carefully extract the unstable explosive through treacherous terrain before it detonates. Singer Darius Rucker Guest Stars as Desmond Abati, the Bomb Maker.

Natalia's mission to solve cold cases is a success when a man imprisoned for rape is set free six years later. However, when the CSIs reexamine the evidence, find the true culprit and go to arrest him, they find that someone else has already taken justice into their own hands and killed him. Meanwhile, Alexx discovers that a corpse in her morgue may have died due to surgeon error on the operating table.