Catherine Isaac was born in Liverpool and was a journalist before she became an author. She wrote her first novel, Bridesmaids, under the pseudonym Jane Costello and her eight subsequent books were all Sunday Times bestsellers. You Me Everything was her first work writing as Catherine Isaac. It was selected by the Richard & Judy Book Club, has been translated into twenty-four languages and a movie adaptation is in development by Lionsgate and Temple Hill. In 2019 she won the Romantic Novelists’ Association award for Popular Romantic Fiction. She lives in Liverpool with her husband Mark and three sons.