Replacing Lighting, the police dog from the first Renfrew movie, was another
German Shepherd, Silver King, whose screen presence lasted a mere half a dozen movies. Director Al Herman was contracted to direct two Renfrew movies. Because the studio, Grand National Pictures, filed bankruptcy, Criterion acquired the former contract and Herman fulfilled his obligation before departing the
poverty row studio for another low-budget entity, Monogram. Herman would go on to direct a number of Tex Ritter westerns. == Soundtrack ==