Cheap, tacky sets, bad acting that degenerates into ridiculous ham at the end, a poorly worked out, insubstantial plot: these are the glaring elements of of this really poor film. The only interest is the early role for James Mason, who rises a bit about the general lack of quality. I can't understand why the BFI resurrected this film which has little even historical interest (though there is some). You wouldn't have known there was a war on during the events of the film apart from some oblique references by Mason's character. Don't bother with this film unless you have an interest in the meagre amount of social history.
A film with plenty of promise, but without a well-paced narrative.
There is a sense of low budget haste and wartime rationing about the whole thing, suggesting that too much was left on the cutting-room floor.
James Mason does his brooding schtick to reasonable effect, and the plot twist is pretty good, but it is all a bit too rushed.
Even so, a worthwhile watch for lovers of old British b/w movies.