NCIS Database

Devil's Trifecta is the ninth episode of NCIS Season 10 and the 219th episode of the entire NCIS series.


A Seaman attempts to kill FBI Agent Tobias Fornell, only for Fornell to kill his assassin in self-defense which prompts the NCIS team at the FBI's request to come and investigate the crime scene but the team are left stunned when they soon discover that a figure from Gibbs and Fornell's past is involved in a separate investigation concerning the discovery and arrest of the person responsible for a series of identity thefts.


A lone car pulls to a stop beside a pavement, its light dying out down almost immediately.

It then shows that the car is waiting for another car that is currently at a drive-through.

In the main car, the driver flicks a match and while examining the numbers on the packet, lights his cigarette up.

From a distance, the driver blows out some smoke while the drive-through is reflected in his sunglasses.

In the other car is none than FBI agent Tobias Fornell.

A worker hands Fornell his change and his food with Fornell thanking the worker.

As Fornell examines his food from Beltway Burger, the same mysterious car sits there.

Fornell then produces some french fries from the bag and begins eating them.

As that happens, the driver gets out, dropping his still-lit cigarette onto the pavement. He then begins walking briskly and firmly, his footsteps full of determination before he stops in front of Fornell who looks up.

The driver then draws a gun.

Fornell barely has time to react before two shots emerge, creating a crack in the car's window.

Seconds later, Fornell responds by firing back with the driver collapsing to the floor, dead.

It then cuts to the inside of the car where Fornell lowers his weapon and begins breathing heavily, obviously stunned at what's happened.

Act One

Act Two

Gibbs after learning from Vance that he, Fornell and Diane Sterling will be working together on this case.

Act Three

Act Four

Act Five

DiNozzo arrives into the bullpen and tells Gibbs that Ducky confirmed that Lambert died of multiple stab wounds.

Ziva then picks up by telling them that Fornell is still taking statements.

Major Events

  • Diane Sterling returns to help the NCIS team on a case.
  • It's later revealed that Diane is actually an agent working for the IRS.


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.
Ziva David Cote de Pablo Junior Special Agent of the NCIS Major Case Response Team.
Timothy McGee Sean Murray (actor) Special Agent of the NCIS Major Case Response Team.
Abigail Sciuto Pauley Perrette Chief Forensic Specialist of the NCIS Major Case Response Team.
James Palmer Brian Dietzen Medical Examiner Assistant.
Leon Vance Rocky Carroll Director of NCIS.
Donald Mallard David McCallum Chief Medical Examiner of the NCIS Major Case Response Team.

Recurring Cast

Name Portrayed by Role
Tobias Fornell Joe Spano Senior FBI Special Agent.
Diane Sterling Melinda McGraw Gibbs and Fornell's ex-wife.

Other Cast

Name Portrayed by Role
Gordon Fremont Danny Nucci The killer.
Viggo Kiln Colby French One of the murder victims.
Oliver Lambert Will Beinbrink A man who appears in the episode.
Avis Boyle J. Downing A man who appears in the episode.
Al Parker Trevor Torseth A man who appears in the episode.
Female Guest Noree Victoria A woman who appears in the episode.
Male Guest Brendan Bradley A man who appears in the episode.