Bill Holmes rescues Rinty from a car wreck not realizing that there is a stolen $50,000 diamond necklace hidden in the dog's collar.

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Main Cast: Rin-Tin-Tin, Matty Kemp, Evelyn Pierce, Philo McCullough, Tom Dugan, Allan Cavan, Grover Ligon

Director: D. Ross Lederman

Writer: Robert Lord

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Cinematographer:

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