This is classic Cottrell Boyce: brilliantly funny, believable and very human. - The Bookseller

Frank Cottrell Boyce has cracked it again with a fast-paced adventure about a boy who turns green . . . a rallying cry for the power of difference. -- Lorna Bradbury - Telegraph.co.uk

An action-filled romp from an all-star author. - Metro

A funny, silly and underlyingly serious story about self-belief, slapstick adventures, a very endearing penguin, the miraculousness of London and the value of being nice to people. It also carries the message that even if your are small (or any other size) and green (or any other colour), you should never be pushed around. -- Nicolette Jones - Sunday Times

Family and friends, the power of the imagination, tackling bullies and learning that real heroes come in every shape and size are just some of the themes covered in this delightful, laugh-out-loud reading odyssey which has been brought to glorious life by Steven Lenton's quirky illustrations and is guaranteed to enchant both children and parents. - Lancashire Evening Post

rank Cottrell-Boyce is a multi award-winning children’s book author and screenwriter. Millions, his debut children's novel, won the prestigious CILIP Carnegie Medal.
His other books include Cosmic, Framed, The Astounding Broccoli Boy, Sputnik’s Guide to Life on Earth, Runaway Robot, Noah’s Gold and The Wonder Brothers. He has enjoyed a long-standing collaboration with award-winning illustrator Steven Lenton. His books have been shortlisted for a multitude of prizes, including the Guardian Children’s Fiction Prize, the Whitbread Children’s Fiction Award, The Roald Dahl Funny Prize and the Blue Peter Book Award.
Frank is also a highly successful screenwriter. He has written for the hit TV series Dr Who and his script for Michael Morpurgo’s Kensuke’s Kingdom won a British Animation Award. Along with Danny Boyle, he devised the Opening Ceremony for the London 2012 Olympics. Frank has been the judge for the 500 Words competition and the BBC's One Show As You Write It competition.
Frank is a lifelong champion of children’s books. In 2023 he launched a successful podcast with Nadia Shireen, The Island of Brilliant!, celebrating writing and illustration for children of all ages.
He lives in Merseyside with his family.

Steven Lenton is a multi-award-winning illustrator, originally from Cheshire, now working from his studios in Brighton and London with his dog, Big Eared Bob. He has illustrated many children's books including Head Kid and The Taylor Turbochaser by David Baddiel,