Thick As Thieves is the fifteenth episode of NCIS Season 19 and the 429th episode of the entire NCIS series.
Synopsis[]
Parker's delinquent past resurfaces when NCIS is called to Philadelphia to investigate the death of a Navy petty officer.
Prologue[]
Act One[]
Act Two[]
Act Three[]
Act Four[]
Act Five[]
Torres and McGee in the bullpen.
Trivia[]
- Despite being credited, neither Mark Harmon nor David McCallum appear in this episode.
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. Despite being credited, McCallum doesn't appear in this episode. |
| 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 |
| Billy Doyle | Kevin Chapman | Alden Parker's friend from Juvenile Hall and Sean Doyle's uncle. |
| Kat Hanna | Ashley Platz | Jewel Thief. |
| Mark Sisco | Jose Pablo Cantillo | AKA "Shady Man", he is an agent with the DEA. |
| Colin (Thick As Thieves) | Braxton Hale | |
| Lola | Trisha LaFache | |
| Dubrow | Ruben Grundy | Detective with the Philadelphia Police Department. |
| Laura Ramirez | Deb Heitt | Navy Chief. |
| Policeman (Thick As Thieves) | Tony Becker | |
| Car Owner | Jeff Pride | |
| Danna Calley | Val Garrahan | Navy Petty Officer Second Class. |