The story is a simple one, but told with psychological subtlety and strikingly fluid camerawork and editing. A young cop (Gustav Fröhlich, the hero of Metropolis) with rectitude in his veins apprehends a sneak thief (Betty Amann) in the act of stealing a diamond, then fails to turn her in. There's a gratifying mutuality to their seduction; although the lady's tiger-like leap upon her captor is astonishingly feral, she's soon as vulnerable and perplexed in their relationship as he is. A subplot involving her longtime lover, a master criminal (Hans Adelbert von Schlettow), eventually intersects with their love affair. Up to the very end--which somewhat anticipates Robert Bresson's Pickpocket--we can't be sure who's going to be sacrificed to save whom.

Director Joe May was no auteur on the order of Fritz Lang or F.W. Murnau; it's hard to locate an artistic personality in his movie. But he and cinematographer Günther Rittau had a state-of-the-art camera dolly to play with, making the German ideal of "the unfettered camera" a freewheeling reality. Amann is beguiling as a Louise Brooks knockoff, an ambulatory white fur under a cloche hat who evolves into a dark, hieratic figure of Fate. --Richard T. Jameson