While McGee stays with Delilah in a hospital, Gibbs, Tony, and Ellie find and recover a bullet, which bears the DNA of the wheelman, whom Gibbs clipped during the escape; Abby identifies him, and she and Tony gather data about him, which Gibbs and Duck review. Gibbs, Tony, and Ellie see the escape SUV, which bears a message; Abby finds a modification to it. McGee gets approval to return to work, but Dr. Cranston learns that McGee has avoided an unpleasant new truth, so she talks with him. CIA and NSA help with the search for the terrorist; McGee finds an address for the wheelman, then Gibbs and Tony, with backup by FBI and DoHS, grab the wheelman and take him to the chat room, where Gibbs gets some information; apparently Parsa, the head bad guy in charge, escapes again. Delilah survives her injuries and complications, including paralysis; Gibbs and McGee sit together awhile outside Delilah's room.