Starts as a rather ho-hum affair with little of the suspense promised by the title. It's more a showcase for Belita's skating talents propped up around a routine melodrama. But things kick into gear for the third act as the tension gradually seeps in. However, what really saves this film is the look of it. This is a masterpiece of noir lighting, you could make a whole book of screenshots from it. Even if the rest of the movie is merely adequate, it's worth seeing for the gorgeous style alone.