An expectant couple heads to a remote cabin to have a natural childbirth but comes under attack from a predatory midwife who will stop at nothing to snatch their unborn child from them.
讲述女主Grace Sachs过着心目中理想的生活：Grace是位成功的心理治疗师，有着优秀的医生丈夫及在精英私立学校就读的儿子，而且她正准备出版一本两性议题书《You Should Have Known》，书中主要是斥责女人不听从自己直觉，没看出男伴所呈现的意思。然而在出版前几周，一宗致死事件牵涉到突然失踪的丈夫，Grace这才发现自己生活出现巨大裂缝，…
