Stephen King called The Killer Next Door "scary as hell," and it has already received rave reviews from the New York Times Book Review, the Boston Globe and the Associated Press. Alex Marwood is a pseudonym for British novelist Serena Mackesy, who has worked extensively across the British press as a journalist. Her last book, The Wicked Girls, earned a 2014 Edgar Award for Best Paperback Original and is now nominated for an Anthony Award and Macavity Award.