story of three circus daredevil who take on the evil 39013 an escaped convict who seek to destroy the possession of horace granville the man responsible for send him to jail . consider by man to be one of republic fine hour it certainly have a sterling cast that include charles quigley and herman brix and mile mander and charles middleton in one of his best villain role . frankly the cast alone be reason enough to see this . the action in the serial be top notch and most if not all of the cliffhanger be reuse several time by the studio in serial that follow this one . the action be balance by a good story which doesn not really repeat itself again and again . actually the problem with the serial be not so much the plot be repeat but the location . my lack of love for the serial ( i be not a lover of it and i like it ) come from the fact that the film be constantly use industrial location for it cliffhanger . it seem to be that most of the location seem to be warehouse or factory or something industry relate . it in keep with the plot and but at the same time i would have like to see something else . that say this be a really good action serial that should be see if you want to see one thats near the top of the pile .