Quick! Remember back in 1998 when you taped Castle Keep off Channel Five, and stored the tape safely away vowing “one day, I shall complete my collection of ponderously-paced psychological horror films with pretensions way above their station, about a bunch of Nazis guarding a remote Eastern European fort and one by one succumbing to supernatural happenings”? Well, now’s the time to act! This is, amusingly, based on an entirely different novel with the same plot, albeit a more sci-fi, less literary one. But that doesn’t stop Michael Mann wheeling out the latex bogeymen with all the pomp and bluster he can muster, plus everyone’s least favourite soundtrack composers, Tangerine Dream.