Deciding to stop on the way to take her son to a football match at her old friends house who she hasn't seen for twelve years she witnesses something unbelievable. Her friend flora has aged but two of her children are the same age as they were twelve years ago. When her friend sees her later in the book and looks scared Beth is determined to find out the truth at risk to her marriage, her children and her job. The story takes you through twists and turns as she fears her friend is in danger and where is the third child? It is gripping and you want to continue reading can the children really not have aged? It has made me want to read more by Sophie Hannah and I recommend this if you want a gripping thriller.