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.

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.

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

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.

The FBI continues to interrogate Conner, which leads him to panic under the pressure; Annalise, Tegan and the students defend a woman accused of violating a disabled man's civil rights for developing a dating app that discriminates against him.