Frank Cottrell-Boyce is a successful British screenwriter whose film credits include Welcome to Sarajevo, Hilary and Jackie and 24 Hour Party People. Millions, his debut chidlren's novel, won the 2004 Carnegie Medal and was shortlisted for the Guardian Children’s Fiction Award.

His second novel, Framed, was shortlisted for the 2005 Whitbread Children's Fiction Award and has also been shortlisted for the 2005 Carnegie Medal. His third novel, Cosmic, was shortlisted for the Carnegie Medal, the Guardian Children's Fiction Prize and the Roald Dahl Funny Prize.

Frank has also written a sensational sequel to the much-loved Chitty Chitty Bang Bang and the heartwarming Runaway Robot.

Joe Berger, the illustrator of Hubble Bubble, Granny Trouble and Superhero Dad, is a children's author, illustrator and cartoonist who also makes the occasional award-winning animated short film and title-sequence.

He is co-creator of the Berger & Wyse food cartoon in the Guardian magazine each Saturday, and has illustrated numerous books, inside and out, for children and grown-ups. Joe lives in Bristol with his wife, three daughters, two cats and a small dog.