You can just imagine the scene in some movie producers office :

" You know that movie set in the 1980s where Christian Bale kills his colleagues ? "

" Yeah vaguely "

" Well I just wrote the sequel "

" Is that the one where both Bale's character and Bale himself don't make an appearance , instead we have a teenage bimbo bumping off people she doesn't like ? "

" Yeah "

" Then why's your screenplay called TEENAGE BIMBO GOES ON KILLING SPREE ? Shouldn't either the words American or Psycho appear if it's a sequel ? "

" Hey I never thought of that "

"And it's probably illegal to call something a sequel if it has absolutely no connection with the original movie "

" Thanks for pointing that out boss . I'll rewrite the opening scene even if it contradicts the first movie . Let's do lunch "

I'm sort of guessing the producers had what's known in Britain as " A liquid lunch " or possibly they had something even stronger . As many people on this site have pointed out AP2:AAG not only hints that not only does it have nothing in common with the original movie it also seems to contradict AP . The story centres around Rachael Newman who would have been about four years old during the events of the first film . Why did anyone have to use the character of Patrick Bateman to set up the story here ? It's not even a plausible set up and it's not a plausible story in the first place . Perhaps the most ridiculous thing is how on earth Rachael would be physically able to commit these crimes because Mila Kunis doesn't look an inch taller than five foot , doesn't look an ounce heavier than ninety pounds and yet is able to commit acts of extreme violence with a sharp object . Realising this unlikely scenario the director wisely often cuts to a different scene when Rachael bumps off a victim . But this doesn't stop other massive plot holes like the police not checking for DNA when the victim of a car crash is found at the end of the movie

AP2:AAG is yet another cynical attempt to sell a stupid movie as a " Black comedy " but this is done in an even more cynical manner since it's a serial killer screenplay marketed as the sequel to a totally unrelated movie . It might have funny moments but these I'm sure are totally unintentional . If you saw the original you will hate this , if you haven't you will still hate this . Perhaps the motive behind it was to make the original appear much better than it actually was . If so then the producers have succeeded