What is the author's style in Arkham Asylum by Grant Morrison?

Because Arkham Asylum is a graphic novel, its point of view is a third person camera, much like a movie, watching the action unfold. The camera is guided by the writer and artist, pointing out to the reader details such as the moon Tarot card that falls to the ground when Two-Face knocks down the house of cards and the joker card on the floor of Harriet Arkham's room, prescient of the Joker who will later inhabit the house.

During the flashbacks to Arkham's life, the story is told from Arkham's journal, so it takes on Arkham's first person narrative point of view. Arkham is descending into madness, so his point of view is unreliable. He has repressed his own memory of killing his mother, and he has experienced disconnects from reality and hallucinations. Arkham's journal is a journal of impressions, things that originate inside Arkham's mind, as much as it is a journal of events and facts. The real story is not the external story of his family's death and Arkham's revenge, but the internal story of Arkham's struggles with his own impulses.

The story of Batman follows Batman's character and so takes on his perspective of events. Batman begins at the outside of the madhouse and the reader follows him as he explores deeper and deeper levels of the structure, symbolic of moving more and more deeply into Batman's own mind. The flashbacks to Batman's parents' death reinforce this internal journey. Batman's parents' death is the primary motivation behind Batman's actions, and so it is necessarily a core element in the story, coloring everything that happens to Batman.