希区柯克首次自编自导作品，也是他唯一一部挂名编剧作品，以两个拳击手爱上同一个女孩为故事情节，展现了希区柯克对三角关系的迷恋。本片的片名既可指拳击场，也可指这三者纠缠不清的关系以及女主角的臂环。由于这是希区柯克投奔新公司之作，因此他使出浑身解数，把影片拍得生龙活虎，片尾那段长达7分钟的拳击比赛是影片的精华段落，希区柯克与摄影师约翰·考克斯研发了特殊的摄影技巧，让拳手出拳速度更快，场面显得更为激烈，成为希区柯克默片经典。

A ruthless outlaw becomes very protective of a prizefighter when he learns the young man is his own son.

18-year-old Rosie Kaplan O'Grady was found as an abandoned baby by O'Grady, an Irish policeman, and Kaplan, a Jewish pawnbroker, and raised by them as their own. She is being courted by two men; prizefighter Terry Callahan and a rich socialite, Tommy Sinclair and has to choose between them.