Pari Thomson is Editorial Director for picture books at Bloomsbury Children's Books. Half Persian, half English, she lived in many places while she was growing up, including India, Pakistan, the USA, the UK and Belgium. She studied at Oxford University and now lives near the river in London, not far from Kew Gardens. Greenwild: The World Behind the Door is her debut novel.

Elisa Paganelli, the illustrator of the bestselling Greenwild trilogy, was born in Modena (Italy) in 1985, and since childhood books have been her best friends.