CSI “19 Down…” (Season 9 Episode 9) December 9, 2008 CSI, Videos 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 Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)