Night Killer was released as a sequel to Texas Chainsaw Massacre in Italy for some bizarre reason and it makes no sense, because with its burnt faced killer with razor fingers, it'd make much more sense as a sequel to Nightmare on Elm Street. That's besides the point, because as many similarities as Night Killer has with other films, it's really its own beast.
It involves a woman who is attacked and raped by a serial killer and she loses her memory completely and ends up getting abducted by a random guy who may or may not be the killer who's still murdering women around the city.
Night Killer is poorly made from top to bottom with awful performances, unconvincing gore effects, and a script that seems to have been made up on the spot, but it's oddly compelling in its own bad movie way.
