3 Moments From "The Enemy Within" - NCIS S12 E12

The NCIS team searches for a home-grown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worker.

1. "The Enemy Within" - NCIS S12 E12

The NCIS team searches for a home-grown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worke, on NCIS, Tuesday, Jan. 13 (8:00-9:00, ET/PT), on the CBS Television Network. Pictured left to right: Mark Harmon, Joe Spano and Sean Murray Photo: Patrick McElhenney/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

2. "The Enemy Within" - NCIS S12 E12

The NCIS team searches for a home-grown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worke, on NCIS, Tuesday, Jan. 13 (8:00-9:00, ET/PT), on the CBS Television Network. Pictured left to right: Emily Wickersham and Michael Weatherly Photo: Patrick McElhenney/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

3. "The Enemy Within" - NCIS S12 E12

The NCIS team searches for a home-grown terrorist after a rescue mission in Syria reveals an American was involved in the capture of a social worke, on NCIS, Tuesday, Jan. 13 (8:00-9:00, ET/PT), on the CBS Television Network. Pictured left to right: Sean Murray and Emily Wickersham Photo: Patrick McElhenney/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved