DIRECTOR LEON VANCE GIVES HETTY SOME SHOCKING NEWS WHILE SHE IS UNDER INVESTIGATION IN D.C., AND NELL GOES UNDERCOVER AS HETTY TO PROTECT ONE OF THEIR OWN, ON A REBROADCAST OF "NCIS: LOS ANGELES," MONDAY, JAN. 26

Editor's note: This episode replaces the previously scheduled episode.

"NCIS" Star Rocky Carroll Guest Stars as Director Leon Vance

"Praesidium" - The NCIS: LA team takes action to protect one of their own while being interrogated by the Department of Justice. Meanwhile, Nell goes undercover as Hetty, and Director Leon Vance gives Hetty disturbing news while she is in Washington, on a rebroadcast of NCIS: LOS ANGELES, Monday, Jan. 26 (9:59-11:00 PM, ET/PT), on the CBS Television Network. (Originally broadcast 10/13/14.)

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:

Rocky Carroll (NCIS Director Leon Vance)
Aisha Hinds (Chief Investigator Ava Wallace)
John Heard (Special Congressional Investigator Michael Thomas)
Eddie Shin (Matthew Ogilvie)
Jason Manuel Olazabal (Craig Lennox)
Amol Shah (Team Member)
Cuyle Carvin (Beckett)
Biana Lopez (EMT)
Marybeth Massett (Congresswoman Ann Jones)
Neil Colin (David "Duke" Fletcher)

WRITTEN BY: Erin Broadhurst and R. Scott Gemmill

DIRECTED BY: Dennis Smith