What Happened to Mary
- Annu: 1912
- Paese: United States of America
- Genre: Action, Thriller
- Studio: McClure Publishing Co., Edison Studios
- Parolla chjave: movie serial
- Direttore: Charles Brabin
- Cast: Mary Fuller, Marc McDermott, Charles Ogle, Barry O'Moore, Bliss Milford, Bigelow Cooper
