WHEN CALLEN AND SAM ARE TRAPPED IN AN ARMED SUBMARINE WHICH TERRORISTS HAVE AIMED AT AN AIRCRAFT CARRIER IN SAN DIEGO, THE NCIS: LA TEAM MUST FIND THEM AND PREVENT THE ATTACK, ON THE SIXTH SEASON PREMIERE OF "NCIS: LOS ANGELES," MONDAY, SEPT. 29

"Deep Trouble, Pt. II" - Callen and Sam are trapped in an armed submarine that terrorists have aimed to hit an aircraft carrier in San Diego. Meanwhile, Hetty defies orders and forgoes her trip to Washington, as the team tries to locate and save Callen and Sam and prevent the terrorist attack, on the sixth season premiere of NCIS: LOS ANGELES, Monday, Sept. 29 (9:59-11:00, ET/PT), on the CBS Television Network.

REGULAR CAST:

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

GUEST CAST:

Mercedes Masohn (DEA Agent Talia Del Campo)
Cameron Daddo (Charles Anderson)
Val Lauren (Jabril)
Andy Mackenzie (Michael Wilson)
Kieu Chinh (Madge)
Rafi Silver (Ali Hanna)
Chervine Namani (Yusef)
Jason Mac (Driver)
Clark Freeman (DEA Agent)

WRITTEN BY: R. Scott Gemmill

DIRECTED BY: Dennis Smith