ABBY IS RECRUITED TO WORK ON A TOP SECRET MISSION ONLY TO DISCOVER THERE IS MORE TO IT THAN SHE BARGAINED FOR, ON "NCIS," TUESDAY, APRIL 7

"Toxic" - When a government scientist goes missing, Abby is recruited to carry on his work, but the team worries that she may meet the same fate as her predecessor, on NCIS, Tuesday, April 7 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

SERIES REGULARS:

NCIS Special Agent Leroy Jethro Gibbs: Mark Harmon
NCIS Special Agent Anthony DiNozzo: Michael Weatherly
Dr. Donald "Ducky" Mallard: David McCallum
Abby Sciuto: Pauley Perrette
NCIS Special Agent Timothy McGee: Sean Murray
Ziva David, Mossad Liaison: Cote de Pablo
NCIS Director Leon Vance: Rocky Carroll

RECURRING CAST:

Jimmy Palmer: Brian Dietzen

GUEST CAST:

Marine Sergeant Major Robert King: Peter Jason
Jordan Jones: Christopher Cousins
Doctor Phillip Heller: Andrew Borba
Nurse Hannah: Dunstan Marianne Muellerleile
Lois Heller: Julie Claire
Drew: Daniel Travis
Marie: Mim Drew
FBI Agent Samantha Morris: Felice Heather Monteith
Orderly: John Brantly Cole Jr.
FBI Agent: Keith Burke
Marine PFC Marco Riggs: Tavis Danz

DIRECTED BY: Tom Wright

WRITTEN BY: Steven D. Binder

RATING: TVPG-LV