I rather enjoyed this quirky and quickly paced wartime thriller. "Warner" (Edmund Lowe) is a renowned lawyer who also dabbles, successfully, in a bit of locksmithery. Indeed, he is regularly called upon by companies and authorities alike to help them out when locks needs "unlocking". His skills are also on the radar of some devious Nazi spies who want to try and trick him into opening a safe in which some secret documents are securely stashed. Can he, and his increasingly involved wife "Myra" (Janis Carter) stay one step of the fifth columnists and, probably for him, not fall down the fire esca...