The crime seemed to have lost itself in the sleety cold of the December midnight upon which it was committed. The trails were not blind–there were simply no trails. The circumstances baffled explanation–a lone woman entering an empty taxicab; a run to a distant point in the city; the discovery of the woman’s disappearance, and in her stead the sight of the dead body of a prominent society man–that, and the further blind information that the suit-case which the woman had carried was the property of the man whose body was huddled horribly in the taxicab. (Summary from the text)