Shawn tangles with the Army when he claims that a Private's suicide was actually murder, and suspects Juliet's former military/current mercenary brother is involved.
Lassiter and Juliet are at the scene of a possible suicide with Gus, Shawn and Abigail. It appears the victim hung himself, but Shawn sees signs of murder and discovers dog tags stuffed down the dead man's throat. This is not just a murder now, it's a military crime, which poses jurisdictional problems. But Juliet says she knows someone who might be able to help with that, and she calls her brother Ewan, an ex-military man who is now hired out by the government for covert missions. He is in the middle of finishing up a job, but he is able to tell Juliet that swallowing dog tags is a sign of shame. He then tells her he's near Santa Barbara and is coming in for a visit.
The next day, Ewan is at the police station meeting the gang when the autopsy report comes in, supporting the murder theory. They will now need to go to the base and ask questions. Juliet thinks Ewan could be of assistance and asks him to come along. At the gate to the base, he flashes his credentials and they are immediately admitted. There, they meet Major General Felts, who tells them that Starks' death is a military matter. But Lassiter and Juliet insist on seeing Stark's belongings and tracing his movements that day. Felts acquiesces and tells his assistant Lt. Wallach to take them to Starks' barracks and to the motor pool where he worked. The group decides to split up, and Ewan goes with Shawn and Gus to the motor pool where Shawn discovers that Starks signed out of work on Monday. A private there tells them it could be because he was either sick, injured or had a meeting with a superior. Just then, Ewan gets a call from his boss, who knows where he is and what he's doing. He tells Ewan to root out the bad seed on the base and cover it up. When Ewan hangs up, another private hands him a file on Starks. Ewan rips out the page where it says Starks was meeting with Felts on Monday and shreds it.