NCIS strikes a deal with convicted murderer Paul Triff, giving him a 48-hour furlough at his former residence, now McGee's home, in exchange for information that can convict his former cellmate, Gabriel Hicks, the murderer who deceived Gibbs and Fornell.

When evidence reveals an NCIS team member is a hitman’s latest target, the team must search through old case files to determine who is seeking vengeance.