A single mother faces her worst fear—the past—in a provocative novel of suspense by the author of The Speed of Light.

Iris Jenkins knows that bad things happen. She’s tried to escape these things for years. So when Iris is entrusted to house-sit at a lodge on the South Dakota prairie, she thinks she’s prepared for anything.

But one surprise is Sawyer Jones, the property’s neighbor and caretaker. He’s a caring, reassuring presence who’s making her feel safe and alive again. Then late one night, Iris hears a chilling cry for help coming from a walkie-talkie buried in a box of toys. As the calls get more desperate, personal, and menacing, Iris realizes the person on the other end isn’t reaching out for help. They’re reaching out to terrorize her.

Now the only way for Iris to move forward in life is to confront the past she’s been running from…a threat that has now followed her into the dark.