On the surface, the 2000s cult horror comedy, American Psycho, may appear as a sleek crime thriller that recounts the story of a wealthy young urban professional living a double life.

Even in a film that exudes violence and arrogance, it is a seemingly ordinary and unassuming piece of card that shows the deepest layer of Patrick Bateman’s mental confusion.

In 2000, director Mary Harron adapted the book as a film with lead actor Christian Bale, creating the cult classic “American Psycho.” 25 years later, while Wall Street’s grip has loosened ...