Coworkers Ruby and Harry are in love --- but they’re married to other people. They decide to tell their spouses that their marriages are over and to start a new life together. Ruby has wanted to leave her controlling husband for a while, so she tells him she’s leaving and waits at the hotel where she and Harry are to meet. But Harry never shows up. Suddenly, Ruby has lost everything. Harry won’t answer her calls, and she’s fired from her job. Just as Ruby thinks she’s hit rock bottom, strange and menacing things start to happen --- someone is sneaking into her apartment, and someone is following her home late at night --- and she is going to have to fight for her survival.

The morning after real estate agent Gemma Brogan has dinner with a prospective client, she's furious at herself for drinking so much. But there will be more to regret than a nasty hangover. She starts receiving mementos from that night: A photo of a hallway kiss. A video of her complaining about her husband. And worse...much worse. The problem is she doesn't remember any of it. As the blackmailing and menace ramp up, Gemma fears for her already shaky marriage. The paranoia, the feeling that her life is spiraling out of control, will take her back to another night --- years ago --- that changed everything. And Gemma will realize just how far the shadows from her past can reach.

Hannah Monroe's boyfriend, Matt, is gone. His belongings have disappeared from their house. Every call she ever made to him, every text she ever sent, every photo of him and any sign of him on social media have vanished. It's as though their last four years together never happened. As Hannah struggles to get through the next few days, with humiliation and recriminations whirring through her head, she knows that she'll do whatever it takes to find him again and get answers. But as soon as her search starts, she realizes she is being led into a maze of madness and obsession. Step by suspenseful step, Hannah discovers her only way out is to come face to face with the shocking truth.