THE NCIS TEAM INVESTIGATES THE MURDER OF A PETTY OFFICER THAT HAS THE HALLMARKS OF A SERIAL KILLER OPERATING IN THE AREA, ON A REBROADCAST OF "NCIS," TUESDAY, JUNE 21

Series Star Rocky Carroll Directs the Episode

Margo Harshman Returns as Delilah Fielding

"Viral" - When a petty officer's murder matches the M.O. of a local serial killer, the NCIS team must determine if this is the killer's latest victim or the work of a copycat. Also, McGee and Delilah must learn to compromise before moving in together, on a rebroadcast of NCIS, Tuesday, June 21 (8:00-9:00 PM, ET/PT), on the CBS Television Network. Series regular Rocky Carroll directed the episode and Margo Harshman returns as Delilah Fielding. (Originally broadcast 10/27/15.)

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:

Kelli Williams (NCIS Special Agent Maureen Cabot)
Margo Harshman (Delilah Fielding)
Gregory Harrison (Navy Captain Roland Ebbakey)
Brad Benedict (Navy Lieutenant Nick Rossmore)
Kelly Frye (Navy Lieutenant Kara Gifford)
Ryan Kennedy (Former Navy Petty Officer First Class Peter Woodruff)
Andrew Hawkes (Metro P.D. Detective Dan Campbell)
Alisha Boe (Farrah Meyers)
Dante Swain (Navy Petty Officer Second Class Adam Meyers)
Makabe Ganey (Boy A.K.A. Jackson Edward)
Mother (Melissa Greenspan)
NSA Attorney Jake Malloy (Jamie Bamber)

WRITTEN BY: Jennifer Corbett

DIRECTED BY: Rocky Carroll