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What Happened to Mary
- సంవత్సరం: 1912
- దేశం: United States of America
- శైలి: Action, Thriller
- స్టూడియో: McClure Publishing Co., Edison Studios
- కీవర్డ్: movie serial
- దర్శకుడు: Charles Brabin
- తారాగణం: Mary Fuller, Marc McDermott, Charles Ogle, Barry O'Moore, Bliss Milford, Bigelow Cooper