While replacing a furnace at the DoD high school at the Marine Corps Base, Quantico, Virginia, workers find a smoked and preserved body inside the chimney; Gibbs and company investigate. Ducky has trouble with the time of death, and Abby has trouble with the fingerprints. Tobias shows interest in the victim, who, he says, was a serial killer; Gibbs and Tobias make a deal; they visit the widow, and the gang execute a search warrant. Tony sees Jeanne again, and Abby sees Marty again. Marty helps Abby, who tells Gibbs, who tells Fornell. Gibbs and Fornell confront the real serial killer. McGee takes much heat from his co-workers about his novel.
—DocRushing