Harriet Reuter Hapgood is the author of THE SQUARE ROOT OF SUMMER and HOW TO BE LUMINOUS. Her first-ever professional writing credit was for Just Seventeen magazine, and she's been YA-obsessed ever since. She likes burritos, cats, Gwyneth Paltrow and young adult fiction, which she plans to write more of, though she's also considering a PhD in Dawson’s Creek. Her surname is Reuter Hapgood, not Hapgood, and she will go ahead and realphabetise her books in your home or bookshop if you file her under H.

Follow her on Twitter: @hapgoodness and on Instagram: @hapgoodness if you like pictures of tacos and gardens.