Real name: Dennis Lynds. Beginning in 1968 with The Mystery of the Moaning Cave and ending in 1989 with Hot Wheels, Dennis Lynds wrote fourteen novels under the pen name William Arden for the juvenile detective series The Three Investigators, which was originated by Robert Arthur, Jr.. Under this same name, he also wrote five novels featuring private eye Kane Jackson, a former military policeman who has become an industrial security specialist after leaving the military. The first Jackson novel, A Dark Power, appeared in 1968. As Arden, Lynds also wrote the highly-regarded espionage short story, "Success of a Mission," which was a finalist for the 1968 Edgar Award for best short fiction.