The Legend of Big Hat Billy

Billy's parents are out of reach, and his grandparents suddenly go missing. What to do? Billy figures that out, but doesn't know whether his parents or grandparents are alive or dead. Were they kidnapped? Things look that way, the next question is why? Liz and Roscoe are stumped..for a while. Good detectives, they figure it out. Billy falls in love... with a horse, of course.