This is a poorly scripted but prettily photographed whodunnit. It starts out with a locked room mystery but bogs down until the murderer turns up, unprefigured, along with method and motive in the last minute. Structurally it is unsound and the occasional interesting image cannot save it.
Perret tries, though. He starts off with some of his exquisite formal compositions, but those soon become lost in his need to push the story along. There are some interesting sights along the way, like a tailor's dummy that can be set to the exact body image of anyone the tailor is cutting clothes for provides some interest. But as the story is so poorly plotted, it isn't enough.