Will McGill can't wait for Halloween. But, as usual, Will has found himself in trouble again! Join Will and his new friend Mack as they try to avoid getting caught up in a major costume calamity. Can Will McGill figure out how to use the power of his magic hat to help others, or only for himself?

Brian Costello is a primary grade teacher, writer, and speaker who loves working with young people of all ages. He has been working with kids in various roles over the past ten years. Brian currently resides in southern New Jersey with his wife and daughter.