16 Years is the 7th episode of NCIS Season 13 and the 289th episode of the entire NCIS series.
Synopsis
As the NCIS team investigate the murder of a retired Navy Lieutenant which occurred in a forest, they soon learn that Ducky is a member of a secret society dedicated to solving cold cases while Abby is left extremely guilt-ridden after learning that she may have been responsible for putting an innocent man in jail for sixteen years when the team discover that she was the one who conducted the test that led to the man's imprisonment in the first place.
Prologue
Act One
Act Two
Act Three
Act Four
Bishop in the prison.
Act Five
Cast
Series Regulars
| Name | Portrayed by | Role |
|---|---|---|
| Leroy Jethro Gibbs | Mark Harmon | Special Agent in charge of the NCIS Major Case Response Team. |
| Anthony DiNozzo Junior | Michael Weatherly | Senior Special Agent and second-in-command of the NCIS Major Case Response Team. |
| Timothy McGee | Sean Murray | Special Agent of the NCIS Major Case Response Team. |
| Abigail Sciuto | Pauley Perrette | Chief Forensic Specialist for the NCIS Major Case Response Team. |
| James Palmer | Brian Dietzen | Assistant Medical Examiner for the NCIS Major Case Response Team. |
| Eleanor Bishop | Emily Wickersham | Probationary Special Agent of the NCIS Major Case Response Team. |
| Leon Vance | Rocky Carroll | Director of NCIS. Despite being credited, Carroll does not appear in this episode. |
| Donald Mallard | David McCallum | Chief Medical Examiner for the NCIS Major Case Response Team. |
Other Cast
| Name | Portrayed by | Role |
|---|---|---|
| Walt Osorio | Richard Riehle | A former New Hampshire cop and a member of The Sherlock Consortium for Investigation. |
| Judith McKnight | Jessica Walter | An author of airport paperback novels and a member of The Sherlock Consortium for Investigation. |
| Lyle Waznicki | Todd Louiso | A member of The Sherlock Consortium for Investigation. |
| Michael Hayes | Matthew John Armstrong | A Navy Seaman and the son of retired Commander Runyan Hayes. |
| Makaela Hayes | Lauren Bray | Michael Hayes's daughter and the granddaughter of retired Commander Runyan Hayes. |
| Jason Tupperman | Christopher Gartin | A man who appears in the episode. |
| Natalie Tupperman | Iris Almario | A woman who appears in the episode. |
| Todd Bennett | Nate Scholz | A former Navy Seaman. |
| Prison Guard (16 Years) | Joe Pistone | A man who appears in the episode. |
| Stephenson | Jonathan Salisbury | A man who appears in the episode. |
| Lucas's Father | Paul Mabon | A man who appears in the episode. |
| Lucas (16 Years) | Mataeo Mingo | A young boy who appears in the episode. |
| Dwight's Father | Nick Toren | A man who appears in the episode. |
| Dwight (16 Years) | Zeb Sanders | A young boy who appears in the episode. |
| Prisoner | Punnavith Koy | Uncredited role. |