In New Orleans, Louisiana, 20 years ago Dan McLane was the lead agent of the NIS in charge of a team (the Fed Five), who tied a series of deaths to a salesman named Victor Lorta, whom a jury held to be guilty. The Gibbs team and others now continue to investigate the recent death of McLane. Another body turns up in the wetlands; again the MO is the same as that of the Privileged Killer; the bunch believe that a copycat killer is at work. A concerned young citizen provides a clue. Ducky suggests the possibility that maybe someone framed Lorta, and that maybe the original killer is still on the loose; Gibbs reluctantly considers that theory, and he concedes that sometimes people make mistakes. The bunch in Nola find another body, and they discover an old mistake; McGee comes close to the truth, then the bunch find the real killer and take care of him. Pride, LaSalle, and Brody get their next case, and Gibbs and Ellie prepare to fly back to Washington.