In remote Oyster Creek, a beautiful young mother and her baby daughter Ruby have gone missing. But it was no secret that Delilah Waters never wanted children. She wasn't coping with motherhood, and everyone believes she leapt to her death in the creek, taking Ruby with her. Everyone, that is, except Liz Dawson. Wrestling with her own demons, Liz risks everything to uncover a truth that becomes more complex with every twist. Of all people, Liz knows that just because someone is a reluctant mother, it doesn't mean they don't love their child. And it doesn't mean they're capable of murder... does it?