Nadia Shireen has won awards for her picture books including the UKLA Book Award for Good Little Wolf and most recently for Barbara Throws a Wobbler, which has been described as a 'little doorway of joy' by Caitlin Moran. She's also been shortlisted for the Roald Dahl Funny Prize and the Waterstones Children's Book Prize, and has been Writer-Illustrator in Residence for BookTrust. Grimwood is her first series for older readers.