Recent scandals leave the Graysons on edge; Emily targets the psychiatrist responsible for institutionalizing her as a child; Declan and Jack face a tough decision.
Lightman and his ex-wife, Zoe, witness the execution of a murderer they prosecuted 17 years ago and face the possibility that they sent the wrong man to his death.
When the lab is attacked, Horatio must fulfill a gunman's unique request in order to save five hostages, including new CSI Jesse Cardoza.
When America's sweetheart, Phoebe Nichols, bursts into flames during a concert, the CSIs expose the dark side of pop stardom.
Eric Delko returns as an expert witness for the defense, pitting himself against his old team.