I Am Legend is a novel by Richard Matheson that was first published in 1954. The novel is about a man named Robert Neville who is the last surviving human in a world that has been overrun by vampires. Neville is immune to the vampire virus, and so he spends his days hunting vampires and trying to find a way to cure the virus. The novel was made into a movie in 2007, and a sequel is currently in development.