Callen and psychologist Nate Getz track down a man Callen believes was present for his training when he was young on NCIS: Los Angeles. "Genesis" is the 17th episode of the show's 13th season.
The team investigates the kidnapping of Master Sergeant Boomer, a military working dog on NCIS: Los Angeles. "MWD" is the 16th episode of the show's 13th season.
The team goes undercover to find stolen high-end art on the black market on NCIS: Los Angeles. "Pandora's Box" is the 13th episode of the show's 13th season.
The team must find who killed a scientist and stolen advanced radar technology on NCIS: Los Angeles. "Where Loyalties Lie" is the tenth episode of the show's 13th season.
(Hetty approaches Callen as he is sleeping, he wakes up staring at Hetty) Hetty: Did you catch him this time? You were twitching like a sleeping dog. Callen: Well, you now what they say about sleeping dogs. (looks at Hetty)