Who was the woman at Dead Oaks? Her name was Sylvia Merriott, she had red hair and she always wore gloves. But who was she really? The real estate people don't know and the taxi driver has seen her only once, but from the moment Fran and her friends arrive, warnings appear. Judy feels sure there is someone else in the house Mrs. Merriott? Hal is slugged upstairs and when Rose tries to summon help the wires are cut. As the fog thickens outside, panic mounts inside. Irene's body is found stuffed in a cupboard and Lissie, who had looked through a window and saw something, is strangled. Ever increasing terror stalks until the murderer is trapped and the identity of Mrs. Merriott revealed. Then there is one more surprise.