 His other fiction includes a suspense series (featuring American entrepreneur Merritt Fury), a contemporary detective series (featuring Chess Hanrahan, who solves paradoxical murders), and a period detective series (featuring Cyrus Skeen in 1920s San Francisco).Outside of his work as a novelist, Cline is known for his writings on aesthetics, his defenses of capitalism and of free speech, and his criticisms of contemporary political trends and of Islam (and religion in general).Cline has written on freedom of speech and censorship issues for "The Encyclopedia of Library and Information Science" and "The Journal of Information Ethics".