Sixty riddles based on wordplay that's clever enough to be intriguing as well as funny—each, with its answer, on a full, small page with an illustration that's gruesome enough to suit the occasion but also colorful, well drawn, and usually comical. Sure to be as popular as Maestro's Halloween Howls, 1983; fortunately, the sturdy paper should withstand a lot of use. ``What holiday is a hoot? Owloween.'' (Nonfiction. 7-10)