When the Night Wind Howls — Pamela F. Service

Ghostly apparitions at the community theater thirteen-year-old Sidonie and her mother join as a way of making friends after moving to a small Indiana town lead Sid to an investigation which uncovers something so sad and so evil it seems it could never be put right--but she determines to try.Thirteen-year-old Sidonie joins forces with a minister and a young technical genius to uncover the secrets of a haunted local theater and battle the forces of evil to save the soul of the handsome leading man