I watched one movie in 1992-1993 (but I think it was made probably in 80?s but I am not sure; the movie is color).
Probably this movie was produced in Europe (UK, France, Germany), but I am not sure.
I remember several episodes in this movie.
One man knocked at the door? One woman opened it.
He came in. They started kissing each other.
And then the man stabbed this woman (in the chest, back).
The name of this woman was Cathy (maybe I am mistaken).
Then he dressed her (off-screen) and put her body in the grove (off-screen), bushes? outside her apartment (He also put some

soldiers' buttons and camouflage patches next to her body and probably she was raped as well).
I remember somebody asked him to do it to dishonor the military soldiers (probably it happened just after the finishing the

WWII in Germany, but I am not sure!).
Two policemen who were investigating this case thought that that woman was raped and murdered by soldiers.
At the end another woman (probably she found out that the murderer was that man) came in the house of that man... this man

murdered her... but very soon those two policemen came and captured him.
Probably that man murdered several women in that movie (probably he was a serial murderer).
At the end of the movie the pictures of the murdered women by this man were shown.
That is all I remember.
I highly appreciate any your possible help to track the movie.