THE CSI TEAM INVESTIGATES THE BIZARRE DEATH OF A YOUNG WOMAN WHOSE BODY WAS USED FOR SCIENTIFIC EXPERIMENTATION, ON A REBROADCAST OF "CSI: CRIME SCENE INVESTIGATION," THURSDAY, JUNE 1

Melinda Clarke ("The O.C.") Returns As Lady Heather

The CSIs investigate the unusual death of a young woman whose body appears to have been used for scientific experimentation, on a rebroadcast of CSI: CRIME SCENE INVESTIGATION, Thursday, June 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Richard Lewis directed the episode from a script by Jerry Stahl ("Permanent Midnight"). (Originally broadcast 2/9/06)

Melinda Clarke ("The O.C.") returns as Lady Heather.

When the body of a young woman is found half-buried in the desert outside of Vegas, Grissom teams up with Lady Heather (Clarke) to discover the cause of the victim's unusual death. The mystery deepens when the CSIs discover that the woman was participating in a clinical study where doctors performed experiments for sleep deprivation.

Gil Grissom: William Petersen
Catherine Willows: Marg Helgenberger
Warrick Brown: Gary Dourdan
Nick Stokes: George Eads
Captain Jim Brass: Paul Guilfoyle
Sara Sidle: Jorja Fox
Greg Sanders: Eric Szmanda
Dr. Robbins: Robert David Hall
David Phillips: David Berman
Sophia Curtis: Louise Lombard
Hodges: Wallace Langham
Wendy Simms: Liz Vasseyv Happy Jack: Jim Cody Williams
Ruben Caster: Michael Patrick McGill
Dr. Mulligan: Jeff Sugarman
Lady Heather: Melinda Clarke
Jacob Wolfowitz: Kevin Crowley
Johann Sneller: Kevin Crowley
Zoe Kessler: Annie Burgstede
Receptionist: Suzanne Reed
Office Metcalf: Joseph Patrick Kelly
Professor Rambar: Tony Amendola

RATING: TV14-LV