Xandra Collins was rich, famous, and missing. After inheriting a fortune, she vanished without a trace, leaving her 100-year-old mansion abandoned. A frightening enemy had been stalking the wealthy heiress. Thirteen-year-old detective...

A deserted mansion perches on a steep hillside, overlooking a rocky canyon. Tattered curtains hang behind broken windows, and a turret stretches toward the sky. Three years ago the wealthy owner disappeared suddenly, leaving behind a house...