My short story starts with the protagonist, Matthew, being out processed from prison. His crime was involuntary manslaughter of his wife (he was driving while intoxicated and she died as a result). His goal is to be reunited with his son. His son is living in the foster system on the other side of the country (in New York). During his journey, he has to face his inner demons (unresolved psychological issues) regarding his wife's death. The story has a Stephen King twist. The protagonist has a tumor in his brain which allows him to see a demon (which is disguised as a human traveler). The tumor also causes crippling headaches for which he was self-medicating. This self-medicating led to driving while intoxicated. The demon traveller (who is possibly the Horseman of Disease) is traveling to New York as well. He has to defeat this demon. In case it isn't obvious, symbolically the Horseman is a personification of the protagonist's inner demons. The protagonist will resolve his psychological issues as he defeats this creature. I'm not sure how to handle the initial encounter between the demon and the protagonist. Any suggestions?