Carlo Aldini and Eve Gray find themselves at loose ends and decide to liven it up by forming a partnership to look into mysteries. They settle on Elfriede Borodin, who has disappeared. They stir the pot using personal ads in newspapers. The respondents lead them in several directions at once.... and into a nest of spies looking for a missing document.
It's based on Agatha Christie's second novel, THE SECRET ADVERSARY, and it's a nicely plotted thriller. Mrs. Christie was trying out new teams, and this one was Tommy & Tuppence -- changed, for some unclear reason in this German movie to a French couple. There are a couple of interesting thrill sequences, but this movie shows its age in the thriller department, but actually caring what everyone is actually looking for, instead of concentrating on the budding romance of the movie's two lead. Even though it's not a great movie, it's certainly a well made example of the genre and just right for something for Dame Agatha to have crafted -- she was great at plot construction, but struggled to put an interesting sentence or character together. Just right for a late silent programmer!
