The Starman and Me

When twelve-year-old Kofi spots a bewildered, stone-age boy standing on a supermarket roundabout, he can't believe his eyes. The boy, who calls himself Rorty Thrutch, has no memory of how he arrived in the quiet town of Bradborough, and he's being hunted by a mysterious force. Kofi must solve the riddle of Rorty's past and protect him from danger while trying to fit an ancient visitor into his ordinary life.