"The Cat from Hell is a short story written by Stephen King. King initially published the first 500 words of the story in March 1977 in Cavalier, and the magazine held a contest for readers to finish the story. The winning entry, as well as King's complete story, was published in the magazine in June of the same year.
Synopsis[]
A professional hitman is offered $12,000 to take out an unusual target—a cat. He accepts, despite being told that the cat was implicated in the murders of three different people. He soon discovers that the cat is much more than it seems-the employer reveals that his company tortured and destroyed thousands of cats in the name of research, and he believes this cat is a feline emissary of revenge. While driving toward a desolate place to kill it, the cat escapes confinement and eventually attacks him—crawling inside his body to finish the job—after he is temporarily paralyzed in the resulting accident. After killing the hitman, the cat leaves on "unfinished business" to go after the hitman's employer.