"Bad Medicine" boasts the imposing Richard Kiel in the role of a Native American sorcerer known as The Diablero, who possesses the hypnotic power to 'change reality,' instigating a rash of murders of high society women for their most valuable diamonds. Vincenzo is content to accept the police theory that these were suicides, Ramon Bieri's Captain Joe Baker (later popping up under a different name in "Legacy of Terror") witnessing a robbery at the Gem Exchange that results in two guards shooting themselves with their own guns, and a coyote transforming into the Diablero, who leaps off the roof and vanishes from sight, retaining his stolen cache as a black crow. Marvin Kaplan plays a former diamond cutter who figures that since none of the prized items have appeared on the black market that Carl must consider the killer a collector. Alice Ghostley as Dr. Agnes Temple first relates the legend of this Diablero, among the cliff dwellers from centuries past who dared to steal the temple jewels and as penance must acquire an eternal treasure, longtime screen veteran Victor Jory exultant as Charles Rolling Thunder, who immediately cautions Kolchak on the only way to stop the creature: "The Diablero cannot live with the sight of its own gaze." Richard Kiel would menace Kolchak again in an even better episode, "The Spanish Moss Murders."
