December 1924, Karl Denke fails to smite Vincenz Olivier with a pickaxe. He would have been his 31st victim. The film thus reconstructs the mind, motivation, and psyche of its main character in intense dialog between him and the inspector给老婆讲各种吉尼斯世界纪录,老婆不为所动!讲到世界上最长的黄瓜104厘米时,老婆终于“哇”了一声!