a pretty good stab at a parlor murder movie
a remake of a play that was made into a movie by Alfred Hitchcock called "Dial M for Murder"
a remake of Hitchcock's classic Dial M For Murder about a husband who hires a man to bump off his wife
The perfect murder is a murder which benefits the murderer, but also has no negative consequences for him or her; usually, this simply means that the murderer is never caught.