In 1991, the demented mind of Bret Easton Ellis wrote the novel American Psycho, a psychological thriller that brought about much criticism and praise since its inception. The book was adapted into the 2000 movie “American Psycho” starring Christian Bale and directed by Mary Harron.
The reason why it seems that these killing are implied is because at the end while Bateman is talking to his lawyer the viewer realizes that the main point of the movie is that everyone is anonymous and that in actuality nobody cares. The fact that the movie never clarifies which scenes are real moments in Bateman’s life or just his imagination shot on screen leaves viewers wondering until a brain aneurysm ensues and possibly kills them. To avoid such a morbid fate, free your mind or just buy the book (or e-reader equivalent).