What Happened to Mary
- Joer: 1912
- Land: United States of America
- Genre: Action, Thriller
- Studio: McClure Publishing Co., Edison Studios
- Schlësselwuert: movie serial
- Direkter: Charles Brabin
- Besetzung: Mary Fuller, Marc McDermott, Charles Ogle, Barry O'Moore, Bliss Milford, Bigelow Cooper
