Strange and mysterious things

Mandy's always thought the town was weird ever since she went to live with her dad, because her parents are divorced. The neighbors seem strange, and it seems like my parents are hiding a secret from me, and I think it's about my grandparents. Ever since I was a little girl, I a,ways went out there house in the summer. But, one summer they have gone missing and they may be dead! I just need to figure out what's going on.