The story is not of high suspense, and I wondered why. I found that it tries too hard to be a romantic story and thrilling war story at the same time, maybe trying to satisfy too many tastes at the same time. Lauren Bacall is nice, the dialogue is funny but the overall story feels a bit contrived and doesn't line up too well with the hard-boiled side of Bogart's character.
The interrogation scene with the police inspector is amazing to watch - and so are the big man's other appearances in the movie. I even think he nicely managed to tie together the love story and the political aspects of the whole thing.