A former janitor becomes a potential key witness, but Peter and Sam struggle to track him down. Meanwhile, they examine a student trip to Costa Rica.

As Peter learns more about basketball star DeMarcus Tillman, he uncovers evidence of athletes getting preferential treatment at St. Bernardine.

Peter and Sam travel to a prestigious private high school in Bellevue, Washington, to document the story of a filthy vandal called the “Turd Burglar.”