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Corning Company employee Susan Fisher (Kathie Browne) begins to suspect there's skullduggery afoot involving one of the company's holdings, the supposedly played-out Mojave Monarch Mine. Things get curiouser and curiouser when a woman claiming to be company owner Amelia Corning shows up, grabs two huge satchels of money, and then disappears--only to be followed by another woman, who insists that SHE is Amelia Corning. Perry Mason (Raymond Burr) is brought into the case when Paul Drake (William Hopper) is arrested while investigating the highly suspicious goings-on. Ultimately, the Mojave Mine's foreman Ken Lowry (Michael Harvey) is murdered, and Perry must defend the primary suspect--which brings us full-circle to Susan Fisher again! This episode is based on a novel by Perry Mason creator Erle Stanley Gardner)