A master criminal known as The Chameleon threatens to disrupt a mystery contest being held in the public library, but J.G. and the other Watchdogs are on hand to investigate
E.W. (Edmund Wallace) Hildick was a British children's book author. He was born in Bradford, England in 1925. After two years service in the Royal Air Force he became a secondary school teacher, then a writer, later moving to the United States to become editor of a literary magazine. He died in London in 2001.