A FLASH FLOOD HITS LAS VEGAS AND THE CSIs FIND THAT MURDER RISES TO THE SURFACE, ON "CSI: CRIME SCENE INVESTIGATION, THURSDAY, OCT. 7

"Down the Drain"-- Heavy rain in Las Vegas causes the CSI team to investigate the demise of victims found in the sewage drains, on CSI: CRIME SCENE INVESTIGATION, Thursday, Oct. 7 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Ken Fink directed the episode written by Naren Shankar, one of the series' executive producers.

When Grissom and his team investigate the apparent murder of a man found in a storm sewer, Catherine and Warrick find themselves searching for clues in the storm drain tunnel, where they learn that this may not be a murder after all. Meanwhile, across town sanitation workers stumble upon human bones also found in the drain. Through further investigation, Catherine, Warrick and Grissom identify the victim and but now need to follow the trail to find the killer.

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
Officer Metcalf: Joseph Patrick Kelly
Marty Kessler: Steve Monroe
Roger Durbin: Brent Briscoe
Terri Durbin: Gigi Rice
Eugene Durbin: Jesse Plemons
Toby's Grandma: Cristine Rose
Lt. Ick Dysart: Lennie Loftim
Gambler: Jack Carter
S&S Worker: Michael Dempsey
Floater: Scott Lincoln
Young Eugene: Alec Plotkin

RATING: TV14-LV