Melanie Gough
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Melanie Gough was killed by Mary in 1974. She punctured through Melanie's ribcage and tore out her heart. Her death was classed as unsolved. "No burns around the wound, no residue of powder. Gunshot ruled out." Torchwood Three doctor Owen Harper found her case under Operation Lowry, where she was marked as victim 40. (TV: Greeks Bearing Gifts)