The Circular Staircase

Perhaps Rachael Innes would not have taken a summer rental on a sprawling mansion by the sea if she had known it was haunted. By the time she had spent the second--mostly sleepless--night in "Sunnyside", the house proved not only haunted but the site of a murder. To make matters worse, that very night she received news of a spectacular bank failure whose engineer might be under her roof.