My handsome husband Tom. You've given me everything our beautiful son and our perfect new seaside home. I want to trust you, but I know you haven't been honest about why you really wanted to move here. I haven't been honest with you either.

Standing in my bathroom, the luxurious marble tiles cool under my feet, I stare at the test in my trembling hand. The second line is unmistakable: I’m pregnant. This is all my husband Theo and I have ever wanted, but I didn’t think it was possible. I should be excited, but all I can think about is telling my stepdaughter. Because Ellie’s always hated me, ever since she realised it was no longer just her and Theo. Now she’s seventeen, beautiful and smart–smart enough to see through me. And if Ellie decided to uncover my secrets, it wouldn’t be just my marriage at stake… it would be my life.

What if the most dangerous serial killer is the one who hunts her own kind? By day, Leah Nachtnebel is celebrated as one of the greatest pianists of our time. By night, she becomes a ruthless killer, using her brilliant mind to hunt predators who believe they’ve escaped justice. But when her latest target unearths a connection to her dark past, Leah is thrust into the crosshairs of two relentless forces: an FBI agent determined to uncover her secrets and a sadistic serial killer who doesn’t just see her as a traitor—he sees her as a trophy he must possess.

She knows everything about you… but can you trust her? I walk in to my interview with Ava Green and carefully hand over my application. It’s all made up, of course, but Ava doesn’t have to know that. There is so much worry in her blue eyes. Her phone pings with constant messages and a small stain marks her crisp shirt. Breakfast with her two little girls before heading out to this high-flying job every morning can’t be easy. Ava needs me, I think. More than anything.

When you return from a work trip to find your husband dead in the pond, it’s best not to call him a liar and a cheat in front of the cops. Especially when you’ve spent the last few years telling anyone who’ll listen that you sometimes fantasize about killing him. It makes you look kind of, well, guilty.