American Psycho ending explained: Was it in Patrick Bateman's head?

Breaking down the ending to Mary Harron's American Psycho movie adaptation from 2000, starring Christian Bale.
Breaking down what was real and what wasn't in the Christian Bale movie.

Disturbingly Satisfying: American Psycho (2000)

American Psycho' at 25: Bret Easton Ellis on Patrick Bateman's Legacy

This Is Not An Exit: The Legacy of American Psycho

American Psycho (2000) - IMDb

American Psycho' Ending Explained: Was It All in Patrick Bateman's Head?

The Ending Of American Psycho Finally Explained

Can someone give me an in-depth insight of the ending of American Psycho? What happened? - Quora

American Psycho / Nightmare Fuel - TV Tropes

In Hindsight, an 'American Psycho' Looks a Lot Like Us - The New York Times

American Psycho Ending, Explained

American Psycho (film) Literary Elements

American Psycho Ending Explained: Breaking Down The Two Most Common Interpretations

American Psycho's Patrick Bateman nailed 1980s businessman style