Hi all, thanks for helping!
I am looking for an old story I read years ago, that I was just thinking on and wanted to catalogue.
It was a story about a young trophy wife living in the states. A strange older man moves in next door with a hunch back assistant. It becomes discovered that he is actually a former nazi-scientist, he has created a penis/breast/ass enlargement serum, and injects it into the wife, who becomes addicted to sex with the two next door. It ends with her killing them or they die from sex I believe, then returning to “normal” with her husband.
I remember small things as well like her rushing over at night, being surprised with the lab in the basement, and as well the mention once or twice of playing games on a Commodore 64!
If you can help me at all that would be appreciated!