Caine's return to the Harry Palmer character in BULLET TO BEIJING seemed to the beginning of a new series. Complex and amusing, it had novelty and Caine's great performance. Now comes the sequel and it seems a bit of a retread of the first film. I would guess they were shot back-to-back because of the re-use of many characters and sets.This one replaces biological warfare with Plutonium as the evil substance and features no prolonged train trips. The plot is not too surprising and the secret double agent easy to spot. Too bad they could not have tried again. Maybe filming HORSE UNDER WATER ( updated) might have been fun.