When I first took this book out of its envelope I was not sure I wanted to read it. As a mother I was worried it would play on my fears. But you should never judge a book by its cover and I jumped in. To say that I loved the book would be an understatement. It really pulls you in and does not let go. It is not just that it is well written, it also carries the story along so well, and is so believable. The characters are well rounded and relatable, even if sometimes they do something you think is idiotic. This book takes an issue that rumbles on in society: the MMR vaccination and its link to autism, and the consequences to people not vaccinating their children, and then tells the story in a riveting way. It also has a mummy blogger in it, which makes the book even more relevant. Modern and entertaining: you will be gripped until the very last page. A stunning book.

A mother always knows best. Doesn’t she?

What if your choice for your child could harm someone else’s?

Every mother faces impossible choices. Vaccination is one of the hardest. For single mum Kate O’Hara, there was no decision to make. Her daughter Rosie is one of a small percentage of Irish children who can’t be vaccinated against measles. All Kate can do is hope that her little girl is safe.

For mummy blogger Madeleine Cooper, it was a leap of faith she wasn’t prepared to take when she and her husband declined controversial measles jabs for their daughter Clara. All she can do is pray that it’s the right decision.

But when classmates Clara and Rosie both become sick will Kate pay for Madeleine’s choice?

A stunning and addictive new book club read from beloved bestselling Irish author Melissa Hill that explores every mother’s worst fear