Bill Jacobson

Horatio sets out on a personal mission to find his mentor's killer, and Megan worries that he has become too emotionally involved in the case.

Grissom and Warrick discover a woman's mummified corpse locked in a closet, while Nick and Sara investigate a similar crime scene across town; a boy shoots himself in the foot.

The CSI team suspects that a police officer killed in the line of duty was shot by one of his fellow officers.

Scully and Doggett (Gillian Anderson, Robert Patrick) race to find a flesh-eating monster terrorizing the Boston subway system.