Slay the Dragon is the eighteenth episode of NCIS: New Orleans Season 3 and also the 65th episode of the entire NCIS: New Orleans series.
Synopsis
Gregorio gets a surprise when her ex-husband who disappeared after embezzling more than $80 million dollars from the Hurricane Katrina relief fund arrives in New Orleans as the team investigate a murder where the victim was a Naval officer and also the son of a mob boss.
Plot

Gregorio in the restaurant.
Cast
Series Regular
Name | Portrayed by | Role |
---|---|---|
Dwayne Cassius Pride | Scott Bakula | NCIS Special Agent and the leader of the NCIS: New Orleans team. |
Christopher LaSalle | Lucas Black | NCIS Special Agent. |
Tammy Gregorio | Vanessa Ferlito | NCIS Special Agent. |
Sebastian Lund | Rob Kerkovich | NCIS Forensic Special Agent. |
Patton Plame | Daryl "Chill" Mitchell | NCIS Computer Specialist. |
Sonja Percy | Shalita Grant | NCIS Special Agent. |
Loretta Wade | C. C. H. Pounder | Jefferson Parish Coroner. |
Recurring Cast
Name | Portrayed by | Role |
---|---|---|
Jefferson Parish Officer | Mike R. Moreau | Uncredited role. |
Guest Cast
Name | Portrayed by | Role |
---|---|---|
Ethan McKinley | Ed Quinn | Tammy Gregorio's ex-husband. |
Theo Aufiero | John Hensley | Matt Aufiero's brother. |
Matt Aufiero | Tom Degnan | Theo Aufiero's brother. |
Lloyd Williams | Geoffrey D. Williams | |
Kathleen (Slay the Dragon) | Cherrae L. Stuart | |
Vincenzo Moretti | Carl Anthony Nespoli | |
John Boutte | Himself | |
Carl LeBlanc Trio | Themselves | |
Chris (Slay the Dragon) | Brad Napp | Uncredited role. |