The twisted Richard III is haunted by the ghosts of those he has murdered in his attempt to become the King of England.

A cosmetics queen develops a youth formula from jelly taken from queen wasps. She fails to anticipate the typical hoary side- effects.
Directors:
Roger Corman, Jack Hill (uncredited)
Writers:
Leo Gordon (screenplay), Kinta Zertuche (story)
Stars:
Susan Cabot, Anthony Eisley, Barboura Morris

在小镇附近的沼泽地里，一个伐木者看到巨型怪物，但没有人相信他们的话。后来， 戴夫·沃克认定是他红杏出墙的妻子与其情人卡尔·莫顿搞鬼，他追赶二人通过沼泽，并迫使他们跳入水中，水蛭蜂拥而上……
戴夫大惊，被捕，被控谋杀。其他两个本地人决定寻找尸体，也消失在沼泽之中。
最后，警长史蒂夫不得不亲自出马，寻找并试图消灭这些致命的水蛭，以恢复小镇的安宁…