Too Many Cooks is the tenth episode of NCIS Season 20 and the 445th episode of the entire NCIS series.
Synopsis
Members of the NCIS teams in Los Angeles and Hawaii all descend on D.C. to attend the upcoming retirement party of a beloved professor and a former Marine who worked as an instructor at FLETC, only to find themselves working with their D.C. counterparts to investigate the circumstances of his shocking suicide.
Prologue
Act One
Act Two
Act Three

McGee after discovering that the DOD suspect he's the one committing treason.
Act Four
Act Five
Trivia
- This episode begins the crossover that continues in the NCIS Hawaii Season 2 episode Deep Fake (episode) and concludes in the NCIS: Los Angeles Season 14 episode A Long Time Coming (episode).
- Originally, it was to be released on January 2.
- Chris O'Donnell (G. Callen), LL Cool J (Sam Hanna), Vanessa Lachey (Jane Tennant) and Noah Mills (Jesse Boone) are all credited as Special Guest Stars.
- As of this episode, all the members of the NCIS: Hawaii main cast have appeared in an episode of the main NCIS series, the exceptions being Alex Tarrant (Kai Holman), Tori Anderson (Kate Whistler) and Kian Talan (Alex Tennant).
- During McGee's interrogation, he makes a reference to the NCIS: Los Angeles Season 3 episode Sacrifice (episode) where Sam's Challenger, Charlene, was stolen, and the events of NCIS: Los Angeles Season 13 where Callen's identity was stolen and used to create various deepfake videos.
Cast
Series Regulars
Name | Portrayed by | Role |
---|---|---|
Timothy McGee | Sean Murray | Senior Agent for the NCIS Major Case Response Team. |
Nicholas Torres | Wilmer Valderrama | Special Agent for the NCIS Major Case Response Team. |
James Palmer | Brian Dietzen | Chief Medical Examiner for the NCIS Major Case Response Team. |
Kasie Hines | Diona Reasonover | NCIS Forensic Specialist. |
Jessica Knight | Katrina Law | NCIS Special Agent. |
Donald Mallard | David McCallum | NCIS Historian. Despite being credited, McCallum does not appear in this episode. |
Leon Vance | Rocky Carroll | NCIS Director. |
Alden Parker | Gary Cole | NCIS Supervisory Special Agent of the NCIS Major Case Response Team. |
Recurring Cast
Name | Portrayed by | Role |
---|---|---|
Jane Tennant | Vanessa Lachey | Special Agent in Charge of the NCIS: Hawaii team. |
G. Callen | Chris O'Donnell | NCIS Special Agent and the leader of the Office of Special Projects field team. |
Sam Hanna | LL Cool J | Former Navy Seal turned NCIS Special Agent with the Office of Special Projects. |
Guest Cast
Name | Portrayed by | Role |
---|---|---|
Jesse Boone | Noah Mills | Senior Agent and the second-in-command of the NCIS: Hawaii Team. |
Dale Harding | Robert Picardo | Retired Gunnery Sergeant in the United States Marine Corps. |
Greta Ford | Stephanie Hodge | FLETC instructor. |
Libby | Brianna Reed | |
Cambria | Tim Rock | FLETC instructor. |
Simon Williams | Kevin Changaris | |
Kidnapper | Joe Chambrello |