CSI "19 Down..." (Season 9 Episode 9)

Watch a promo from CSI Season 9 Episode 9, "19 Down..." airing this Thursday, December 12, at 9pm on CBS.

Read all our CSI coverage.

Episode Synopsis: "19 Down..." - When a new murder leads to a connection with an infamous serial killer, Grissom secretly joins the class of well-known criminal pathologist Dr. Raymond Langston (Fishburne), to gain access to the killer and get a crack in the case, on CSI: CRIME SCENE INVESTIGATION, Thursday, Dec. 11 (9:00-10:00 PM, ET/PT) on the CBS Television Network.

SERIES REGULARS:

Gil Grissom............................ William Petersen

Catherine Willows.............. Marg Helgenberger

Dr. Raymond Langston...... Laurence Fishburne

Nick Stokes................................ George Eads

Captain Jim Brass....................... Paul Guilfoyle

Greg Sanders.............................. Eric Szmanda

Dr. Robbins......................... Robert David Hall

David Phillips............................. David Berman

Hodges................................ Wallace Langham

Wendy Simms................................. Liz Vassey

Riley Adams......................... Lauren Lee Smith

RECURRING CAST:

Conrad Ecklie................................ Marc Vann

Archie Johnson.............................. Archie Kao

GUEST CAST:

Det. Vartann.................................. Alex Carter

Mandy Webster.................... Sheeri Rappaport

Nathan Haskell.................................. Bill Irwin

Gerald Tolliver.............................. Brad Carter

ADA Valerie Nichols................... Amy Aquino

Overcoat Man........................ Shane Woodson

Officer Akers.............................. Larry Sullivan

Det. Ken Martz......................... Maury Sterling

Mr. Steiner............................. Richard Gilliland

Mrs. Steiner............................. Caroline Aaron

Thomas..................................... Jimmi Simpson

Silvia..................................... Aimee DeShayes

Car Wash

Manager................... David H. Lawrence XVII

Richie...................................... Stephan Sowan

Donny................................... Todd Giebenhain

Student #1................................ Roy Vongtama

Dan Forester.............................. Matt O'Leary

Tiffany Cohen............................ Mimi Michaels

Joel Steiner................................ Josh Jacobson

WRITTEN BY: Naren Shankar and Carol Mendelsohn, series co-executive producers

DIRECTED BY: Kenneth Fink