Sunburn is the 4th episode of NCIS Season 18 and also the 402nd episode of the entire NCIS series.
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.
- This airs the same night as Head of the Snake (NCIS episode).
|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.|
|Delilah Fielding||Margo Harshman||McGee's wife.|
|Emily Fornell||Juliette Angelo||Fornell's daughter.|
|Malcolm Lucas||Robert Mailhouse||Doctor.|
|Deirdre Mulwray||Jennifer Baxter||A.K.A. Sienna Michaels. British bank robber and Lucas' bodyguard.|
|Rupert Kittridge||Chet Grissom|
|A.A. Chairperson||Gwen Holloway|
|Rachel||Jessica Jade Andres|
|Marco||Isaac Gonzalez Rossi|