'Mollie's missing.' As I look at my husband, I struggle to take in his words. For years, I've been so focussed on our son, who needed me to care for him. I've sacrificed so much to make him feel safe. But have I put my own daughter's life in danger?

When we discovered we were having twins, a boy and a girl, I couldn't believe our luck. Within months we would have the perfect family we'd always dreamed of.

The first few years were so happy. Our house was chaotic but full of love just as it should be. But as the years passed, we had to acknowledge that our son Ben needed a lot more support than Mollie. I had no choice but to put his needs first. I wanted him to have the best life possible. But it came at a devastating cost.

Now, Mollie is missing. Clasping my husband's hands for the first time in years, we start to piece together any reason for why she disappeared. Mollie was a straight-A student, a perfect daughter, a loyal friend. As my husband looks at me in fear, I'm forced to confront a truth I have spent years trying to hide.

They say it is impossible to choose a favourite child. But years ago, during a house fire I had to do just that. I had to push one child to safety ahead of the other. I chose my son. Now I'm forced to question whether my dear daughter has always remembered what I did. Am I the real reason she disappeared? And will I ever see her again?

An absolutely unputdownable and tear-jerking read about the strength of a mother's love. Perfect for fans of Jodi Picoult, Kate Hewitt and Diane Chamberlain.

What readers are saying about Emma Robinson:

'Completely heartbreaking. This book gave me ALL the feels. My emotions have been all over the place reading this... This will definitely have you hooked from the beginning. It's a book that you won't want to put down... I adored it.' Littlemissbooklover87 ¿¿¿¿¿

'Oh wow! Emma's books really should come with a warning or maybe just a box of tissues! Be ready to be pulled in, but also get your heart broken!... You will find it hard to put this one down... A heart-wrenching, heartwarming read!... A must-read!' CypressCornerReads ¿¿¿¿¿

'One of my queens of tissues... A beautiful, heart breaking and heartwarming story that pulled every string of my heart... There is only one thing I can say about this story: amazingly beautiful.' B for bookreview ¿¿¿¿¿

'Fabulous... lots of tissues were required in this heartbreaking yet heartwarming and emotional read... I read this in practically one sitting as once I have picked up a book by this author I know that I won't get anything else done. This book left me with a book hangover.' Goodreads reviewer ¿¿¿¿¿