CATHERINE MUST RE-EXAMINE ONE OF THE VERY FIRST CASES SHE PROCESSED AS A CSI, ON "CSI: CRIME SCENE INVESTIGATION," THURSDAY, APRIL 23

Henry Thomas ("ET") Guest Stars As A Convicted Felon

"If I Had A Hammer." - Catherine revisits one of the very first cases she worked as a CSI when the convicted felon in the murder (guest star Henry Thomas) claims the verdict was based on faulty evidence, on CSI: CRIME SCENE INVESTIGATION, Thursday, April 23 (9:00-10:01 PM, ET/PT) on the CBS Television Network.

SERIES REGULARS:

Dr. Raymond Langston: Laurence Fishburne
Catherine Willows: Marg Helgenberger
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:

Archie Johnson: Archie Kao
Conrad Ecklie: Marc Vann

GUEST CAST:

Jeremy Kent: Henry Thomas
Sabrina Owen: Charlotte Ross
Thomas Harrott: Adolphus Ward
ADA Vanderpool: John Prosky
Tyler Owen: John Bain
Clint Owen: Mark Totty
Middle-Aged Detective: Steve Seagren
Sabrina Littee: Brooke Newton

TELEPLAY BY: Allen MacDonald and Corinne Marrinan

STORY BY: Daniel Steck

DIRECTED BY: Brad Tanenbaum

RATING: To Be Announced