I watched this movie late late late one night and it really caught me off guard. I missed the opening credits and at first thought it was some early Hitchcock movie that for some reason I had never heard of. It has some Hitchcock-esque bits from the snappy dialogue in tense situations, a rich supporting cast, bits in a music hall etc but of course it's not Hitchcock. It's Vivien Leigh, who is massively hot as usual, playing a double spy and falling in love with some creepy German guy. I kept expecting a vaguely handsome, stalwart American hero type to nab her but she actually fell for the German, who was ostensibly a bad guy. I guess 3 years later it would have been impossible to make this film but in 1937 it was ok.
As I said, great supporting cast, solid turn by the leads, nice script and tight directing. unfortunately the love story is not as well rendered as it could have been (their exchanges are a bit too arch for my taste), the suspense never really builds to a crescendo and the effects in the end naval engagement certainly do not hold up well but overall it's still a pretty good film.
