A mischievous elf has found his way into the pages of your book in this festive follow-up to There's a Monster in Your Book, There's a Dragon in Your Book, and There's an Alien in Your Book. In the run up to Christmas, children and adults alike will love interacting with the loveable, mischievous little elf as he takes them through the all-important Nice List Test, to discover if they've earned their Christmas presents. But be careful not to let him catch you out! This cheeky elf has a few naughty tricks up his sleeve. . .