A body found on a Marine firing range leads the team to discover a Mafia dumping ground.

When a civilian’s body is found on a Marine bombing range, Gibbs and his team uncover the disturbing news that the area has been dumping ground for the Mafia for years. The team quickly discovers that their victim is actually an undercover FBI agent and that Gibbs’ FBI counterpart, Agent Fornell (guest star Joe Spano), is being imprisoned, accused of acting as a mole who has been feeding sensitive information to the local Mafia boss. Fornell denies the allegations and Gibbs sets out to expose the real spy.