It's Halloween, and Gus doesn't know what to wear. His mom won't let him have a store-bought costume; his dad thinks any old thing will do. Ryan Mason is going to be a vampire, with a cape, fangs, and fake blood. Gus wishes he could be a vampire, too, but, unfortunately, his mother thinks gory store-bought costumes are the worst of all. Gus's only hope is Grandpa's house. Readers will delight in what Gus finds (a fabulous costume) and finds out (Grandma...