My best friend disappeared twenty years ago. I thought she was dead. But today I’ve received a message that makes my heart stop. It says it’s from Izzy. And she’s blaming my new husband for her disappearance… I stare at the email in horror. I’ve only just managed to put what happened to Izzy behind me. My life is so different now. I have two perfect children, and the perfect husband at last. “I couldn’t just say nothing. You remember I was being stalked? My stalker is your husband. You're in danger. Run.” My blood turns to ice as I look up at my charming, caring husband. Is this some kind of joke? Griffin is kind, he's safe. But as he smiles at me, the doubt starts to creep in. The way he always asks me about my childhood, pressing for information about my friends. The way he always wants to know where I am… I thought my best friend was dead. I thought her stalker killed her. If the email isn’t really from Izzy, then who sent it—and what do they want from my family? But if it is, am I living with the man I’ve feared for twenty years? And if he can’t hurt Izzy, will he settle for me instead—or worse, my children…?