Wasn't able to find full Frankenstein 1931 on YouTube but remember it somewhat. So I chose to watch
Teenage Frankenstein 1957. A descendent of Victor Frankenstein's decides to put his theories to test on a modern day teenager. Conveniently, while describing his plans to an associate, a horrific car crash outside his home provides him with his human guinea pig!
Bit of a spoiler ahead. Even though his laboratory is in the basement, there is apparently a basement
in the basement where he keeps crocodiles to eat his "leftovers"..
. All in all, good fun.