基克尔（弗雷德里克·马奇 Fredric March 饰）是一名知识非常渊博的科学家，他将毕生的经历都投注到了探索人性的善恶奥妙之中，并且最终制造出了一种可怕的药剂，这种药剂能够令基克尔化身成为海德先生，基克尔将自己所有的恶意和坏念头都投射到了海德的大脑里。白天，基克尔行医救人乐善好施，待到夜幕降临，海德先生便会现身，杀人害命，无恶…
A young couple die in a plane crash in the jungle. Their son is found by Tarzan and Jane who name him Boy and raise him as their own. Five years later a search party comes to find the young heir to millions of dollars. Jane agrees, again…
