The Shuttered Room (1967) starring Carol Lynley, Oliver Reed, Gig Young, Flora Robson / Synopsis: Another semi-successful attempt to adapt the works of H.P. Lovecraft to the screen, this is loosely based on the short story "The Shuttered Room". A newly married woman, accompanied by her husband, returns to her creepy old ancestral home located on an island in New England. They discover the dark secret hidden behind a heavily locked door in the attic~a door the fearful townsfolk declare "must never be opened". NOTE: Yes, it's her very mentally unbalanced sister.