Single mom Karen is focused on getting daughter Emily graduated and off to college. But when she hires Devin to boost Emily's grades, the tutor becomes obsessed: Emily is the spitting image of the girl he left behind -- at the bottom of a cliff. 　　译文(3): 单身妈妈Karen一心想让女儿Emily毕业上大学。但当她雇佣Devin来提高Emily的成绩时，导师变得痴迷起来：Emily就像他留下的那个悬崖底女孩的翻版。