I am trying to re-call the name of a movie I saw in the 70's.
It's a thriller about a serial killer. The ending is the best part. It shows
A women doing dishes in the kitchen and you hear the dishes clinking
As she is putting them in the dish rack as the serial killer enters the
Home coming up behind her and then suddenly she turns around but its
Not a women it's the detective and he has his gun out and said something
Like not this time.

I appreciate any help with this.

Thank You