The late Tracy Hogg trained at Great Ormond Street Hospital and continued her education in midwifery and caring for newborns at St James' Hospital in Leeds and St Catherine's Hospital, Doncaster. She migrated to the US in 1993 where her uncanny ability to understand and calm babies led to her nickname 'The Baby Whisperer'.

Melinda Blau is an award-winning writer specialising in family and health topics. She is the author of seven other books and countless magazine articles and is the mother of two grown-up children.