The film takes place before, during and immediately after the engagement party of Dr.Henry Jekyll and Miss Fanny Osborne, attended by numerous highly respectable guests (a general, a doctor, a priest, a lawyer), the last of which informs the company that a child has been murdered in the street outside. While the others watch a young dancer perform, Dr.Jekyll instructs the lawyer to alter his will, leaving everything to a certain Mr.Hyde. Shortly afterwards, the dancer is found murdered, and the guests realise that one of their number must be a maniac with a prodigious sexual appetite... 　　译文(2): 影片发生在亨利 · 杰基尔医生和芬妮 · 奥斯本小姐的订婚宴会之前、期间和之后，出席者包括许多受人尊敬的客人(一位将军、一位医生、一位牧师、一位律师) ，最后一位客人告诉公司，一个孩子在外面的街道上被谋杀了。当其他人观看一位年轻舞者表演时，杰基尔博士指示律师修改他的遗嘱，把一切都留给某位海德先生。不久之后，舞者被发现被谋杀了，客人们意识到他们中的一个肯定是个性欲旺盛的疯子..。