'LOVED it. I read it in 3 hours in one sitting' Goodreads reviewer, ? ? ? ? ?THEIR FIRST MISTAKE WAS INVITING HER IN... Rose has it all - the gorgeous children, the husband, the beautiful home.But then her best friend Polly comes to stay. Very soon, Rose's cosy world starts to fall apart at the seams - her baby falls dangerously ill, her husband is distracted - is Polly behind it all?It appears that once you invite Polly into your home, it's very difficult to get her out again... The original psychological thriller: a dark, deliciously unsettling drama, perfect for fans of I Let You Go, The Couple Next Door and The Girl on the Train. Readers LOVE Cuckoo!'Brilliant... truly chilling' Sophie Hannah'Wow. This book is truly amazing... I devoured it' Goodreads reviewer, ? ? ? ? ?'Totally compelling' Daily Mail'This is one smart and sharp psychological thriller... a shiveringly good read' Goodreads reviewer, ? ? ? ? ?'A read-in-one-sitting book!... Julia Crouch writes with disturbing brilliance' Goodreads reviewer, ? ? ? ? ?'Completely thrilling, I promise anyone, male, female, young, old, this book won't disappoint!' Goodreads reviewer, ? ? ? ? ?'I was more and more gripped with the more I read... the ending still managed to blow me away. This was a book that stayed with me for days' Goodreads reviewer, ? ? ? ? ?