Stone's feature film career began in comedy westerns; his first, "The Goat", was filmed in 1918. He starred in 19 feature films. In the 1935 film "Alice Adams", as Mr. Adams, he was the third lead, following Katharine Hepburn and Fred MacMurray. He made his home in Bayside, New York, where he was a neighbor and friend of boxing champion-turned-actor James J. Corbett. Around 1917, Stone built a small estate in the exclusive private community of Forest Hills Gardens. The excess grounds were sold as building lots for two other homes. However, the original mansion still stands. In it are symbols of his acting career, including a theater in the basement and a separate room of store costumes.