Gut Check is the ninth episode of Season Eleven of NCIS and the 243rd episode of the entire NCIS series.
A briefing being held in MTAC is interrupted when it's discovered that the Secretary of the Navy has been bugged. Determined to find out who's responsible, the NCIS team investigate, only to fall into a case that has issues of national security and even murder while working with a young NSA Analyst who predicted two years ago that the security breach would occur.
In the elevator with Gibbs, Porter states her need to clear the air right now before revealing that she has no idea where she got that pen.
- It's revealed that Tony now owns two goldfish.
- NSA Analyst Eleanor Bishop is introduced for the first time.
- After the case, Bishop becomes the official NSA/NCIS liaison officer.
- This is the second episode to briefly feature the in-development Zumwalt-class destroyer. The first was in the Season 5 episode Stakeout (episode).
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the NCIS Major Case Response Team.|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent and second-in-command of the NCIS Major Case Response Team.|
|Timothy McGee||Sean Murray (actor)||Special Agent for the the NCIS Major Case Response Team.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist for the NCIS Major Case Response Team.|
|James Palmer||Brian Dietzen||Assistant Medical Examiner for the NCIS Major Case Response Team.|
|Leon Vance||Rocky Carroll||Director of NCIS.|
|Donald Mallard||David McCallum||Chief Medical Examiner for the NCIS Major Case Response Team.|
|Sarah Porter||Leslie Hope||The new SecNav and Clayton Jarvis's replacement.|
|Eleanor Bishop||Emily Wickersham||NSA Analyst who later becomes the official NSA liaison to NCIS.|
|Ward Davis||Alan Ruck||A man who appears in the episode.|
|Marc Attencio||Geoffrey Blake (actor)||A man who appears in the episode.|
|Rudolph Stalin||Gideon Emery||A man who appears in the episode.|
|Norma Hench||Nichelle Hines||NCIS Special Agent.|
|Chad Flynderling||Tim Peper||NSA Agent.|
|Thaddeus Nox||David Anthony Buglione||Bugger and posing as "Edward Gracey".|
|Library Patron||Grace Noble||A woman who appears in the episode.|