The NCIS team arrive at a crime scene after being called to investigate the death of a mobster and despite Army CID insisting the death was an accident, Gibbs soon realizes that they've stumbled onto a dumping ground, one that the local mob has been using for years to dispose of their victims. Things take a turn when Tobias Fornell reveals that he's being framed by a local mob boss and that one of the FBI agents is actually a double agent or rather a mole working for the mob...