Richard Marsten is a pseudonym used by American author Donald E. Westlake (1933-2000). Under this name, Westlake wrote several young adult novels in the 1950s, including titles such as "Danger: Dynamite!", "Rocket to Luna!", and "The Runaway Robot". Westlake was a prolific writer known primarily for his works of crime fiction, but he used the alias Richard Marsten for his forays into young adult literature.