Mr Mumbles, , HarperCollins Publishers, Barry Hutchison,Horror & Ghost Stories,JUVENILE FICTION, horror;mumbles;scary;darren shan;invisible friend;adventure;funny;imaginary;humour;kyle,, , United Kingdom, en-UShttps://www.harpercollins.co.ukhorror;mumbles;scary;darren shan;invisible friend;adventure;funny;imaginary;humour;kyle, [BLURB],[CITY],,books, ebooks, biblet, Book2look