WHILE INVESTIGATING A MISSING PERSON'S CASE, THE NCIS TEAM UNCOVERS A KILLER WHO PUTS ON SHOWS FOR HIGH-PAYING VOYEURS, ON "NCIS: LOS ANGELES," SUNDAY, APRIL 1

"The Monster" - While investigating a missing person's case, the team uncovers a killer who puts on shows for high-paying voyeurs. Also, Mosley assigns Callen as her partner on a joint ATF mission to apprehend someone from her past, on NCIS: LOS ANGELES, Sunday, April 1 (9:00-10:00 PM, ET/PT) on the CBS Television Network.

REGULAR CAST:

Chris O'Donnell (Special Agent G. Callen)
LL COOL J (Special Agent Sam Hanna)
Linda Hunt (Henrietta "Hetty" Lange)
Daniela Ruah (Special Agent Kensi Blye)
Eric Christian Olsen (LAPD Detective Marty Deeks)
Barrett Foa (Tech Operator Eric Beale)
Renée Felice Smith (Intelligence Analyst Nell Jones)
Nia Long (Executive Assistant Director Shay Mosley)

RECURRING GUEST CAST:

Andrea Bordeaux (NCIS Special Agent Harley Hidoko)

GUEST CAST:

Alicia Coppola (FBI Special Agent Lisa Rand)
Rob Nagle (Albert Barrington)
Laura Kai Chen (Mandy Huang)
Natalia Castellanos (ATF Special Agent Cha'risa Swan)
Christopher Rivas (ATF Special Agent Elliott Ross)
Lamont Thompson (Spencer Williams)
Tobias Jelinek (Robert "Bobby" Griffin)
Dutch Johnson (Thomas Jones)
Josell Mariano (Buyer#1)
Michael Broderick (Cole Bingham)
Kerrie Blaisdell (Cindy Ferguson)
Matt Kelly (Justin Tucker)
Andy Marques (Navy Lieutenant Commander Timothy Weir)

WRITTEN BY: Adam George Key & Frank Military

DIRECTED BY: Dennis Smith