The Grey Room

A ghostly Golden Age mystery from the English playwright of The Farmer’s Wife, famously adapted into a silent film directed by Alfred Hitchcock.
 
At a house party at Sir Walter Lennox’s estate, the guests are spooked by stories of the manor’s legendary Grey Room, in which two unexplained deaths happened years before. Eager to debunk the room’s sinister reputation, Lennox’s son-in-law decides to spend the night in the abandoned bedchamber, only to be found dead the next morning, the victim of no discernable cause.
 
But the Grey Room’s hunger has yet to be appeased—and the body count rises. A renowned London detective is determined to unlock the room’s secrets, convinced that the deaths have a very human cause, though not necessarily a sane one. What happens next will throw the estate into hysteria—and reveal the darkest magic from centuries past.