Ross Montgomery started writing stories as a teenager, when he should have been doing homework, and continued doing so at university. His debut novel, Alex, the Dog and the Unopenable Door, was shortlisted for the Costa Children's Book of the Year and Branford Boase Award. It was also selected as one of the Sunday Times' "Top 100 Modern Children's Classics". His books have also been nominated for the CILIP Carnegie Award, while his picture book Space Tortoise was nominated for the Kate Greenaway Award and included in the Guardian's Best New Children's Books of 2018. The Midnight Guardians, Ross's first fiction novel with Walker Books, was selected as a Waterstones Children's Book of the Month and is garnering huge praise. He lives in London with his girlfriend and their cat, Fun Bobby.