A bulldozer careens wildly down a sandy road and tips over on the beach. The driver is dead and the cab stinks of gin. Although a confirmed alcoholic, the autopsy shows the man was sober when he died.
Kurt, Linda and Stefan start their investigation by examining the background of the man, who had made a career from digging. They are led to a ruined castle where they discover a buried clue that is integral to the case. The team is working together better than ever, but beneath the surface, something remains unspoken and it could thwart justice.