From global bestselling Anthony Horowitz, a brilliantly entertaining new mystery in the Hawthorne and Horowitz series.Richmond, London. Six attractive houses are tucked away in an exclusive and very upmarket gated community: Riverside Close. Surrounded by flowers and shrubbery, they're sealed off from the busy main road and the realities of urban life. At weekends, with the gate locked, the residents enjoy the sound of birdsong, the whirr of mowers, the occasional snatch of opera through an open window.Everyone knows each other. Everyone gets on.That is, until the Kenworthies arrive. With their four big gas-guzzling cars, their noisy children and their plans to build a swimming pool in their garden, they quickly offend every one of their neighbours.When Charles Kenworthy is found dead on his porch, the bolt of a crossbow through his chest, Daniel Hawthorne is called in.But how do you solve a murder when everyone has the same motive?