Will dares Tilly to come ice-skating up at Frost Hollow Hall. No one goes near the place these days. Ten years ago the young heir, Kit Barrington, drowned there in the lake. Rumour has it that the house is haunted ... But Tilly never turns down a dare. Then it goes horribly wrong. The ice breaks, Tilly falls through and almost drowns. At the point of death, a beautiful angel appears and saves her. Kit Barrington's ghost. Kit needs Tilly to solve the mystery of his death, so that his spirit can rest in peace.