A typical spy flick and propaganda piece from Britain in 1940. It has an interesting choice of lead in the form of Conrad Veidt who plays a Danish sea captain tailing a couple of suspicious characters through London. Universal horror starlet Valerie Hobson is the female and most interesting of the two, and the pair soon find themselves caught up in a mildly diverting adventure. It's quite a familiar story and it doesn't really have a lot of 'oomph', but Britain during the 'phoney' war is an interesting setting and the actors commit themselves well.