What Happened to Mary
- Tahun: 1912
- Negara: United States of America
- Genre: Action, Thriller
- Studio: McClure Publishing Co., Edison Studios
- Kata kunci: movie serial
- Pengarah: Charles Brabin
- Pelakon: Mary Fuller, Marc McDermott, Charles Ogle, Barry O'Moore, Bliss Milford, Bigelow Cooper
