7 Moments From "Spiral" - NCIS: Los Angeles S6 E12

While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage.

1. "Spiral" - NCIS: Los Angeles S6 E12

While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

2. "Spiral" - NCIS: Los Angeles S6 E12

Pictured: Eric Christian Olsen (LAPD Liaison Marty Deeks). While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

3. "Spiral" - NCIS: Los Angeles S6 E12

Pictured: Chris O'Donnell (Special Agent G. Callen) and Jordan Belfi (Tom Blanchard). While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

4. "Spiral" - NCIS: Los Angeles S6 E12

Pictured: Chris O'Donnell (Special Agent G. Callen) and Jordan Belfi (Tom Blanchard). While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

5. "Spiral" - NCIS: Los Angeles S6 E12

Pictured: Chris O'Donnell (Special Agent G. Callen). While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Michael Yarish/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

6. "Spiral" - NCIS: Los Angeles S6 E12

Pictured: Eric Christian Olsen (LAPD Liaison Marty Deeks) and Daniela Ruah (Special Agent Kensi Blye). While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Neil Jacobs/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.

7. "Spiral" - NCIS: Los Angeles S6 E12

Pictured: Patrick Gallagher (Don The Security Guard) and Daniela Ruah (Special Agent Kensi Blye). While Callen is undercover in the mail room of an office building to investigate an arms dealer, it is over taken by terrorists and Callen becomes a hostage. When the team arrives to help, they discover the entire building is wired with explosives, on NCIS: LOS ANGELES, Monday, Jan. 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Photo: Neil Jacobs/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved.