Sunburn is the 4th episode of NCIS Season 18 and the 402nd episode of the entire NCIS series.
Synopsis
McGee and his wife Delilah's Bahamian vacation turns into a high-stakes mission when a case NCIS is tracking of a dead escape room manager has ties to the island while Gibbs fears the worst when his search for Fornell leads to blood.
Prologue
Act One
Act Two
Act Three
Act Four

Gibbs in Observation.
Act Five
Trivia
- This airs the same night as Head of the Snake (NCIS episode).
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. |
Eleanor Bishop | Emily Wickersham | Special Agent for the NCIS Major Case Response Team. |
Nicholas Torres | Wilmer Valderrama | Special Agent for the NCIS Major Case Response Team. |
Jacqueline Sloane | Maria Bello | NCIS Forensic Psychologist. |
James Palmer | Brian Dietzen | Chief Medical Examiner for the Major Case Response Team. |
Kasie Hines | Diona Reasonover | NCIS Forensic Specialist. |
Leon Vance | Rocky Carroll | Director of NCIS. |
Donald Mallard | David McCallum | NCIS Historian. Despite being credited, McCallum doesn't appear in this episode. |
Recurring Cast
Name | Portrayed by | Role |
---|---|---|
Delilah Fielding | Margo Harshman | McGee's wife. |
Emily Fornell | Juliette Angelo | Tobias Fornell's daughter. |
Guest Cast
Name | Portrayed by | Role |
Malcolm Lucas | Robert Mailhouse | Doctor. |
Deirdre Mulwray | Jennifer Baxter | A.K.A. Sienna Michaels. British bank robber and Lucas's bodyguard. |
Clarence (Sunburn) | Chris Butler | |
Rupert Kittridge | Chet Grissom | |
Jared | Gabriel Sousa | |
Janique | Vasthy Mompoint | |
Lisa (Sunburn) | Georgia Leva | |
AA Member | Noah Staggs | |
A.A. Chairperson | Gwen Holloway | |
Rachel (Sunburn) | Jessica Jade Andres | |
Marco (Sunburn) | Isaac Gonzalez Rossi |