Sombre and quite stylish spy thriller set on the French Riviera before WWII, but obviously entirely filmed in a studio in London. Even though the painted scenery is extremely artificial, it has a rustic charm which makes it feel like this is staged in a cute Provençal town from a dream.
James Mason plays an Austrian student with an interest in photography who gets into deep trouble when his reel of holiday snaps is developed to reveal pictures of military defences. So which of his fellow hotel residents swapped his identical camera by mistake and is a danger to the Republic?
The French police get the innocent tourist to investigate, threatening him with deportation into his Nazi controlled homeland. Well, they were different times. Soon Mason is chasing a convincingly sinister Herbert Lom across a precarious rooftop in Toulon in an exciting climax.
Lance Comfort is the key director of those named, and could be relied on to turn a small budget into polished entertainment. The hotel of diverse and gossipy guests under suspicion, is pure Agatha Christie. But Eric Ambler's source novel also draws on international intrigue. It's 1938 and France will soon be at war.