"N." is a 54-page novella originally published in the 2008 collection Just After Sunset.
The story concerns the psychiatric treatment of the obsessive-compulsive accountant and amateur photographer who believes that he is responsible for the security of a portal between worlds. The narrative follows the patient's sessions with his doctor culminating with the patient's suicide, which prompts his doctor to investigate the source of his patient's neurosis where the doctor himself falls victim to the same condition.
Adaptation
The story was adapted into a graphic video series by Marvel Entertainment.
Characters
See also
"The Ballad of the Flexible Bullet" similarly deals with the inheritance of insanity, in that case from writer to editor.