All or Nothing is the twentieth episode of NCIS Season 19 and the 434th episode of the entire NCIS series.
Synopsis
NCIS investigates the unexpected death of a Navy reservist who was an investigative journalist while Knight and Jimmy's budding romance is put on hold when a vital organ transfer goes fatally wrong.
Prologue
Act One
Act Two
Act Three
Parker and Ducky in the lab.
Act Four
Act Five
Cast
Series Regulars
| Name | Portrayed by | Role |
|---|---|---|
| Leroy Jethro Gibbs | Mark Harmon | Ex Special Agent Assigned to NCIS Major Case Response team. Credit only. |
| Timothy McGee | Sean Murray | Senior Agent for the NCIS Major Case Response Team. Second-in-charge. |
| Nicholas Torres | Wilmer Valderrama | Special Agent for the NCIS Major Case Response Team. |
| James Palmer | Brian Dietzen | Chief Medical Examiner for the Major Case Response Team. |
| Kasie Hines | Diona Reasonover | NCIS Forensic Specialist. |
| Jessica Knight | Katrina Law | NCIS Special Agent. |
| Donald Mallard | David McCallum | NCIS Historian. |
| Leon Vance | Rocky Carroll | NCIS Director. |
| Alden Parker | Gary Cole | Former FBI Special Agent who is the new NCIS Special Agent in Charge of the Major Case Response Team. |
Other Cast
| Name | Portrayed by | Role |
| Scott Long | Kelly Sry | Doctor. |
| Carson | E.R. Ruiz | |
| Bannon (All or Nothing) | Terence J. Rotolo | |
| John Murphy | Mike Schiff | Navy Reservist. |
| Owen (All or Nothing) | Gianni DeCenzo | |
| June Davis | Becky Wu | |
| Diane Warner | Deborah Strang | |
| Mara Reeves | Erin Matthews | Deputy Attorney General. |
| Paul Newhope | Stephen O'Mahoney | CEO. |