Synopsis

Indefatigable Gil Grissom (William L. Petersen) continues to lead his crack team of Las Vegas crime scene investigators, including Catherine Willows (Marg Helgenberger), as they search for clues in a series of baffling crimes in this action-packed fourth season of episodes. Grissom and his crew use the best scientific equipment and technical methods to solve puzzles and catch criminals in the second busiest crime lab in America.