It's the darkest, scariest night of the year, and T.Rex can't decide what he wants to be for Halloween. Everything he thinks of just isn't uniquely frightening enough. Join T. Rex and his friends as he tries to figure out the perfect scary costume for trick-or-treating. Is it a bat? Or a cat? Or maybe a jack-o'-lantern? Lois G. Grambling and Jack E. Davis's delightful, frightful tale teaches that sometimes, what you need just might be in the last place you look: yourself.