previously on ncis... jacob scott, former mi6, caught selling u.s. nuclear intel to russia. at mi6, he functioned at the highest level of security, until we got a tip from the cia. jacob scott's out for blood. yeah? whose? he said ncis killed his wife. the stolen file-- put it up. boss, this is a hit list? where would he start, gibbs? the top. fornell: the man who ordered the whole damn thing-- tom morrow. no. what's that? (phone ringing) (silenced gunshot) (ringing continues) woman: sir, you can't go in there. no, i'm going in! sir! emt: pulse is erratic. blood pressure's dropping. gibbs: tobias, can you hear me? nurse: 30 ccs of etomidate. a hundred of succinylcholine. prep him for surgery. is he going to be okay? he lost a lot of blood. we'll do what we can. wait, wait. i have a friend, dr. cyril taft. he's out of the country right now, whoa, whoa, whoa, whoa... but maybe he can help.