Gibbs and his team are called to investigate when a fellow NCIS agent is found murdered. When NCIS Special Agent Pacci is found brutally murdered, Gibbs and his team reconstruct a cold case Pacci was working on at the time of his death. The case involves the theft of millions of dollars from a Navy lieutenant who was later allegedly killed in a car crash. With the money never recovered, the clues all point to one woman close to the case who has her own startling secret.