Following an active shooter lockdown at a naval hospital, the NCIS team searches for a suspect who fled the scene with Sloane also investigating after she discovers that someone from her past was inside the hospital and as such, is a key witness in the case.
- Gibbs admits to McGee that he burned Rule 10.
- Jacqueline Sloane is revealed to have had a daughter whom she promptly put up for adoption, despite genuinely loving her.
- Bishop kept a dying plant for Ziva, and resumed payment.
|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||Chief Medical Examiner for the Major Case Response Team.|
|Kasie Hines||Diona Reasonover||NCIS Forensic Specialist; Abby's successor.|
|Leon Vance||Rocky Carroll||Director of NCIS|
|Donald Mallard||David McCallum||NCIS Historian. Despite being credited, McCallum doesn't appear in this episode.|
|Faith Tolliver||Kate Hamilton||NCIS Forensic Psychologist Jacqueline Sloane's daughter.|
|Noah Sykes||Brian McNamara||Evan Sykes's father.|
|Dale Moseby||Sam Daly||Virginia State Police Officer.|
|Odette Malone||Elayn J. Taylor|
|Eugene Pierce||Merrick McCartha||Doctor.|
|Unnamed MPD Cop||Brian Oblak|
|Veronica Crawford||Jennifer Carta||Navy Captain.|
|Unnamed Young Man||Kyle Grossmeyer|
|Unnamed Nurse (Perennial)||Charlotte Evelyn Williams|
|Unnamed Doctor||Roopashree Jeevaji|