6 Halloween Costumes is an interactive children’s book. You get to make choices for Gavin to help him find a costume in time to go Trick-or-Treating. There are six possible costumes and a few endings that have Gavin missing out on the fun. Find all six costumes to decide which one you like best. Note to parents: The "What Should Gavin Do Next?" books are similar to the "Choose Your Own Adventure" books, but for younger readers. The story is goal-oriented and the choices are not life and death.