The 10pm timeslot now, which saw the highly anticipated return of ABC's Castle, and CBS's Hawaii Five-0, to compete with NBC's Revolution, which premiered last week. Revolution dropped a fair bit, though this is to be expected following a premiere/pilot, with a 3.4 rating and 9.21 million viewers this week when compared to last weeks premiere of a 4.1 rating and 11.65 million viewers.