Dr. John Markway recruits three strangers for a sleep-disorder study at the eerie and isolated Hill House. It soon becomes clear his real interest lies in the mansion itself and its sinister history, as they are forced to confront the nature of its horror… ...

Boris Karloff hosts a trio of horror stories about a stalked call girl, a vampire-like monster who preys on his family, and a nurse who is haunted by her ring's rightful owner. ...