The Numerical Limit is the 19th episode of NCIS Season 15 and also the 349th episode of the entire NCIS series.
Gibbs is granted protective custody of a 10-year-old orphaned refugee, Elena when an NCIS case reveals she is the target of a violent gang.
- It's revealed that a week has passed since the events of the previous episode.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the NCIS Major Case Response Team.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist for 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.|
|James Palmer||Brian Dietzen||Assistant Medical Examiner for the NCIS Major Case Response Team.|
|Leon Vance||Rocky Carroll||Director of NCIS.|
|Jacqueline Sloane||Maria Bello||NCIS Special Agent.|
|Donald Mallard||David McCallum||Chief Medical Examiner for the NCIS Major Case Response Team.|
|Clayton Reeves||Duane Henry||Interagency Liaison between MI6 and NCIS.|
|Rico Ruiz||Daniel Steven Gonzalez|
|Javier Martinez||Luis Jose Lopez|
|Kelly Connor||Alexis Carra|
|Elena||Lily Rose Silver|
|Clerk (The Numerical Limit)||Matty Cardarople|
|Daniel Lucas||Hans Marrero|
|Jesse Banks||Jessen Noviello|