There are going to be so many things I wish I could’ve told you in person, Poppy. I won’t get the chance to do that, so perhaps this is my only way …

It’s Poppy Kinsey’s birthday. She should be blowing out candles and opening presents, but hers falls on the type of heart-wrenching, agonising anniversary she would far rather forget. The worst day of them all. The day her mother died.

But this year is special because the person she misses most in the world has left her a set of letters, one for each of her next 10 birthdays. As Poppy opens them year by year, she discovers that no matter how tough life gets, her mum will always be by her side, guiding her along the way.