Ally (Calista Flockhart) reluctantly agrees to meet with a psychiatrist (guest star Tracey Ullman); Fish (Greg Germann) again pursues Janet Reno.
An attack on Jim Brass kicks off a twisted conspiracy targeting the Las Vegas crime lab.
Gil Grissom and Sara Sidle come to the aid of a former colleague who is implicated in tampering with evidence; Maxine and the rest of the CSI team work the murder of a couple slain on their wedding day.
J.C. goes under cover as a bodyguard to protect a famous pop singer who witnessed her manager's murder.
Delilah and Sophie come together during a family emergency. Rome and Regina learn that their potential birth mother could be in danger. Maggie and Gary face a harsh reality when they attend a mutual friend's cancer remission party.
