AS A COLLEAGUE FIGHTS FOR THEIR LIFE IN THE ICU, THE NCIS TEAM CONTINUES AN INTERNATIONAL MANHUNT FOR AN ESCAPED BRITISH SPY, ON "NCIS," TUESDAY, MAY 10

Sarah Clarke Guest Stars as FBI Special Agent Tess Monroe and Duane Henry Guest Stars as MI6 Officer Clayton Reeves

"Dead Letter" - The NCIS team, alongside the FBI and MI6, continue an international manhunt for an escaped British spy who has left one colleague fighting for their life in ICU, on NCIS, Tuesday, May 10 (8:00-9:00 PM, ET/PT), on the CBS Television Network. Sarah Clarke guest stars as FBI Special Agent Tess Monroe and Duane Henry guest stars as MI6 Officer Clayton Reeves.

REGULAR CAST:

Mark Harmon (NCIS Special Agent Leroy Jethro Gibbs)
Michael Weatherly (NCIS Special Agent Anthony "Tony" DiNozzo)
Pauley Perrette (Abby Sciuto)
Sean Murray (NCIS Special Agent Timothy McGee)
Rocky Carroll (NCIS Director Leon Vance)
Brian Dietzen (Jimmy Palmer)
Emily Wickersham (Probationary NCIS Agent Eleanor "Ellie" Bishop)
David McCallum (Dr. Donald "Ducky" Mallard)

GUEST CAST:

Sarah Clarke (FBI Special Agent Tess Monroe)
Duane Henry (MI6 Officer Clayton Reeves)
Joe Spano (Senior FBI Agent T.C. Fornell)
Juliette Angelo (Emily Fornell)
David Dayan Fisher (Trent Kort)
Vince Nappo (Jacob Scott)
Damian O'Hare (Former NCIS Special Agent Allen Kane)
Mia Barron (Doctor Katrina Griffin)
Adria Tennor (Angela Dresser)
Taja V. Simpson (Misha Rose)
Sandra Nelson (Jessica Terdei)
Kamal Jones (Paramedic)

WRITTEN BY: Steven D. Binder

DIRECTED BY: James Whitmore, Jr.