Canine star Rin-Tin-Tin had dozens of movie competitors and imitators. One of the best of these was FBO Studios' Ranger the Dog,, the "hero" of 1928's Dog Law. Ranger races to the rescue when human protagonist Robert Sweeney is framed on a murder charge. The actual killer is Jules Cowles (previously a prominent blackface comedian), whom the faithful Fido chases to the edge of a cliff. Cowles falls to his death, but not before Sweeney has been proven innocent by heroine Mary Mabery. ~ Hal Erickson, Rovi