"Conspiracy Theory" -- The NCIS team investigates when a Petty Officer commits suicide after being institutionalized for a nervous breakdown, on NCIS, Tuesday, April 12 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Jeff Woolnough directed the episode from a script by Frank Military.

Gibbs and the team are stunned when Ducky tells them that the Petty Officer, who claimed to have a stalker, was in fact murdered and did not commit suicide. With the help of FBI Agent Fornell (guest star Joe Spano), the team's investigation reveals the Petty Officer was a victim of a twisted love triangle involving her C.O., who was being investigated by the FBI for kickbacks received from Navy contractors.

NCIS Special Agent
Leroy Jethro Gibbs Mark Harmon
NCIS Special Agent
Caitlin Todd Sasha Alexander
NCIS Special Agent
Anthony DiNozzo Michael Weatherly Dr. Donald "Ducky"

  Mallard       David McCallum
Abby Sciuto     Pauley Perrette

NCIS Agent Timothy
McGee Sean Murray
Jimmy Palmer Brian Dietzen

Sr. FBI Agent T.C. Fornell      Joe Spano
P.O. Jessica Smith      Hilary Salvatore
Lt. Col. Allan Witten   Dean McDermott
Catherine Reynolds      Brigid Brannagh

Captain Vetter Dan Ziskie
Audrey Vetter Molly Hagan
Lynn Simons Jennifer Dundas
Officer Alex
Taylor Robert Manning, Jr.
Corpsman Timothy
Morgan Jonathan Redford
William the Truthteller Kevin Quigley

RATING: To Be Announced