How many times have you despaired about how to handle your psycho boss or listened to your friend talk about how their dream date turned out to be a bit of a psychopath? It's far from just a turn of phrase, psychopaths aren't all serial killers or criminals as you might expect, they are seemingly ordinary people too. In fact around 3% of the general population have strong psychopathic tendencies. The devil you know may be in disguise. So how do you know if someone close to hand isn't quite who they seem? The psycho in your life could be your lover, your child, your colleague, your friend or the hot new date you've met on the internet. In The Devil You Know, forensic psychologist Kerry Daynes explains the psyche of a psychopath, she reveals the behavioural traits they share in common and she gives advice on how to handle them - or better still, how to avoid them at all costs. Using research and high profile case studies, The Devil You Know will help you spot the psycho in your life. The only question is: can you afford not to read this book?

作者：（美国）凯莉·戴恩斯（Kerry Daynes） （美国）杰西卡·费洛斯（Jessica Fellowes） 译者：钱峰

凯莉·戴恩斯（Kerry Daynes），是一名犯罪心理学家。她独立进行自己的心理学工作，同时也和她的心理学家及精神治疗医生团队共同为各种机构工作，包括为警方重大调查做出重要贡献。普普通通的一周内可能会与不堪重负的父母和连环杀手之类形形色色的人打交道。她还在刑事和家庭法律诉讼中担任鉴定人。她处理过英国一些最复杂的狱中罪犯和社区罪犯。凯莉经常在电视台和电台作为专家进行评论，她在英国天空广播公司系列节目“杀死老爸老妈（Killing Mum and Dad）”和4频道“癫狂（Mania）”中出过镜。她出席了2008年犯罪与调查频道的“怪物是怎样形成的（The Making of a Monster）”系列节目，仔细谈论了一些臭名昭著的杀人者的背景。

杰西卡·费洛斯（Jessica Fellowes），是自由撰稿人和新闻记者，为《星期日邮报》（Mail on Sunday）、《每日电讯报》（Daily Telegraph）、《星期日泰晤士报》（Sunday Times Style）、《心理月刊》（Psychologies）等媒体撰稿。她曾是《乡村生活》（Country Life）副主编。