i believe that this be one of elizabeth montgomery best performance in a movie and and i have see most of her movie . i saw this for the first time on television when i be around fourteen and and i be so scared . i watch this movie every now and then and and i still enjoy it very much . i know that these day that this movie would probably not scare people too much . that just go to show that the public movie and television audience have see too much graphic violence in the last thirty year or so . i love movie that do not show the graphic detail and you let your imagination do the work for you . the cast in this movie be top notch . jess walton and who play the sister in the story be very good and even though her part be rather small . she also play in a terrific make for television thriller around the same time call you will never see me again with david hartman . i get the big kick out of eileen heckart performance a the housekeeper . eileen be so good a a lady with a very bad disposition . george maharis who play the husband be quite effective . this story obviously have a lot of so call mistake in the plot and but i love the movie anyway . i highly recommend this movie to people who love a good thriller without graphic violence . i give this movie a vote of seven .