Sam and Callen revisit the first case they worked together on NCIS: Los Angeles season 5 episode 15. They set out to track down a retired assassin who is suspected in the murder of a diplomat.
Danny Trejo (Sons of Anarchy, Machete Kills) guest stars as Tuhon.
Check out photos now.
1. Tuhon's Men Greet Callen and Sam
Tuhon's not quick to greet the NCIS agents when they arrive.
2. Danny Trejo as a Retired Assassin, Tuhon
Danny Trejo plays a retired assassin suspected of murdering a diplomat.
3. Tuhon with His Men
The retired assassin, Tuhon, sits in the corner at a bar in Mexico
4. Danny Trejo as Tuhon
Danny Trejo guest stars as a retired assassin, Tuhon, from Sam and Callen's first case as partners.
5. Sam and Callen Wait
Sam and Callen decide their next move while in Mexico on "Tuhon."
6. Sam, Callen and a Retired Assassin
Sam and Callen suspect Tuhon of murdering a diplomat.
Wait! There's more NCIS: Los Angeles Photos from "Tuhon"! Just click "Next" below: