A scientist performing illegal stem cell research is trying to find a cure for cancer. After the transfer of shark cells is made into a human test subject, the ill man gets well again and it looks like the treatment was a success. But the experiment goes wrong, and the man transforms into monster: half-shark & half-human. But the scientist knows how to use this to his advantage...。《清洁谜案》讲述年轻的单身母亲蕾切尔和她年幼的儿子利亚姆生活贫困,蕾切尔作为一名清洁工努力工作,尽她所能给儿子最好的生活。某天,一位富商艾略特问蕾切尔是否可以专门为他打扫卫生——工资更高,工作时间更少。蕾切尔马上接受了这份工作。可渐渐地,艾略特对蕾切尔和利亚姆的控制欲越来越强。 蕾切尔心生怀疑,开始挖掘他的过去,于是揭开了他童年的一个黑暗故事,这也解释了他对母子二人的痴迷。为了修复过去,艾略特会付出怎样的代价?。