Lilac Mansion — Eileen Hehl

The big old house had been in her family for years, and Kari was looking forward to living in it -- in spite of her grandmother's warnings.

But frightening things started happening from the very moment she arrived there. At first Kari thought she might have imagined the prowler in the garden…until she learned that others had seen him, too. And what about the secret of the boarded-up room? Why had her grandmother never told her anything about the strange old aunts who used to own the house?

Kari's puzzlement turns to fear when a murder is discovered -- and she realizes that she is intended to be the next victim…