Workers find a body at a retrofitting site at a Navy facility; Gibbs and company investigate. Palmer finds evidence, which promptly disappears, and he briefly sees a fleeing person, who takes a shot at him. Vance, the assistant director, continues to use management by intimidation, which does not work on Gibbs. Ducky says that the victim died not from the blow to his head but rather from the injuries resulting from his fall from the third story; Ducky shows Gibbs some curious evidence. The victim's home disappears, and Abby uses hypnosis on Palmer. The team find a second body inside a concrete column, and they figure out everything; Palmer sees the bad guy again and stops him.