Boom is the 3rd episode of NCIS Season 16 and the 357th episode of the entire NCIS series.
Synopsis
When an explosion occurs outside the home of a Navy Petty Officer, leaving two people dead, the NCIS team investigate and soon find themselves racing against the clock to find and stop a bomber whose targets appear to be random. Vance continues physical therapy for the injuries he sustained during his time as a prisoner of Nigel Hakim, "The Monster".
Prologue
Act One
Act Two
McGee and Torres in a suspect's apartment.
Act Three
Act Four
Act Five
Major Events
- It is revealed that Director Leon Vance is being surveilled for unknown reasons by a third party.
- Due to a Supreme Court ruling deeming using pinging of cell phones, even under the pretences of an investigation of finding the killer, unconstitutional, the MCRT team was forced to avoid pinging cell phones until they found a workaround.
Trivia
- The production code for this episode indicates it was filmed after "Third Wheel" but aired before it.
- In one scene, the two necklaces that Bishop wears disappear but in the next scene, they're back again.
Cast
Series Regulars
| Name | Portrayed by | Role |
|---|---|---|
| Leroy Jethro Gibbs | Mark Harmon | Special Agent in charge of the NCIS Major Case Response Team. |
| Timothy McGee | Sean Murray | Senior Special Agent and second-in-command of the NCIS Major Case Response Team. |
| Nicholas Torres | Wilmer Valderrama | Special Agent for the NCIS Major Case Response Team. |
| Eleanor Bishop | Emily Wickersham | Special Agent for the NCIS Major Case Response Team. |
| Jacqueline Sloane | Maria Bello | NCIS Forensic Psychologist. |
| James Palmer | Brian Dietzen | Medical Examiner for the Major Case Response Team. |
| Kasie Hines | Diona Reasonover | NCIS Forensic Scientist. |
| Leon Vance | Rocky Carroll | NCIS Director. |
| Donald Mallard | David McCallum | Chief Medical Examiner for the NCIS Major Case Response Team. Despite being credited, McCallum doesn't appear in this episode. |
Recurring Cast
| Name | Portrayed by | Role |
|---|---|---|
| Kayla Vance | Naomi Grace | NCIS Director Leon Vance's teenage daughter. |
| Guy Ross | Kent Shocknek | ZNN News Anchor. |
Other Cast
| Name | Portrayed by | Role |
|---|---|---|
| Westley Clark | Scott William Winters | |
| Mallory Madden | Dionne Gipson | |
| Todd Nicholas | Cameron Radice | Navy Petty Officer First Class and the husband of Sheba Nicholas. |
| Sheba Nicholas | Tara Holt | Navy Petty Officer First Class Todd Nicholas's wife. |
| Leonard Finnik | JD Walsh | |
| David West | Zach Tinker | Serial bomber and the ex-husband of Gwen Eisley. |
| Taylor Hanna | Minerva Garcia | NCIS Lawyer. |
| Ava | Sharon Gardner | Physical therapist. |
| Walt Fergus | Julien Ari | Edie Samples's boyfriend. |
| Edie Samples | Lana McKissack | Walt Fergus's girlfriend. |
| Gwen Eisley | Sylvia Kwan | David West's ex-wife. |
| Evidence Garage Tech | Andre Franco | Uncredited role. |