Erle Stanley Gardner (1889-1970) was the best-selling American author of the 20th century, mainly due to the enormous success of his Perry Mason series, which numbered more than 80 novels and inspired a half-dozen motion pictures, radio programs, and a long-running television series that starred Raymond Burr. Having begun his career as a pulp writer, Gardner brought a hard-boiled style and sensibility to the early Mason books, but gradually developed into a more classic detective story novelist, showing enough clues to allow the astute reader to solve the mystery. For more than a quarter of a century he wrote more than a million words a year under his own name and numerous pseudonyms, the most famous being A.A. Fair.