Thomas Halliday is an Honorary Research Fellow at the Department of Earth Sciences of the University of Birmingham. His PhD won the Linnean Society's John C. Marsden Medal for the best thesis in the biological sciences in the UK, and he won the Hugh Miller Writing Competition in 2018. He is also the author of the Sunday Times bestselling Otherlands. He was raised in Rannoch in the Scottish Highlands, and now lives in London with his family.

Gavin Scott was born in Wiltshire and raised in rural Dorset, UK. He was fascinated by the natural world from an early age and spent much of his childhood drawing and painting animals and birds. He later earned a BA in Natural History Illustration at Bournemouth Arts University. Working as an illustrator in-house for a number of years, honing his skills in character design, his style gradually evolved from scientific into children's picture books. He now lives in Somerset with his wife, who is also an illustrator, and their growing family. When he's not working he loves rock climbing on the Dorset coast and riding and fettling his old Triumph motorbike.