在这部福尔摩斯：驼背人犯罪/悬疑片中,陆军上校巴克利在一个风雨交加的夜晚神秘死去。案发现场房门紧锁，钥匙不翼而飞，房内的地板、房外的草坪上发现离奇爪印：5个很长的爪指、很长的爪尖，形状如同吃点心时用的题子…
Egged on by his friend Dr. Watson, Holmes agrees to investigate the murder of Col. James Barclay who rose from the ranks to command his Regiment. After returning home from her monthly evening out helping the poor, the dead man's wife Nancy had a flaming row with her husband. After hearing a scream, the servants try to enter the room only to find locked from the inside. When they do manage to enter, they find the Colonel dead from what appears to be a blow to the head and Nancy in a feint. Holmes learns that at her charity work, she had reacted in shock when she approached a new arrival, an old man with a bent back and crooked legs.
