Ducky responds to an emergency call when the Israeli Embassy sends a Royal Navy officer to NCIS for autopsy, only to find a nasty surprise inside the body bag. As Ducky, Gerald and Kate are held hostage in the autopsy lab, the director coordinates with an FBI strike team to negotiate their release. Meanwhile, Kate hesitates when presented with an opportunity to kill her captor, while Gibbs and Tony take more pro-active measures to get their co-workers out safely.