It is 1865 and Union prisoners use a military balloon to escape a Southern prison camp near the end of the Civil War. The balloon drifts for days and finally lands on a mysterious volcanic island with very unusual inhabitants. Also landing, in a better aircraft, is Rulu, a visitor from Mercury. She seeks a radio-active material that will enable her to manufacture an explosive that will destroy the world or, at least, the portion known as Earth in this 15 Chapter Serial from the 1950s.
Two hoodlum brothers are brought into a hospital for gunshot wounds, and when one of them dies the other accuses their black doctor of murder.
Famed aviator Bruce Gentry is working with scientist Andrew Benson, setting out to uncover the origin of a deadly secret weapon---an electronically controlled flying disc which can be directed at moving or stationary targets. The disc was master-minded by an enemy agent known only as "The Recorder" because...he speaks entirely via recordings. Aided by rancher Frank Farrell and his sister Juanita "Nita" Hodges, Gentry consistently foils "The Recorders" schemes, which are carried out by "The Recorder's" henchmen, Krendon, Allen and Chandler, including an attack on the Panama Canal.
The biggest town problem is worrying whether the high school basketball team will win the championship...until racketeers move into town and the kids begin to bet on horses, become overly fond of stripped-down racing cars, and Genevieve Rogers (Jean Porter) suspects her father of being too fond of the school principal's secretary. Town nerd Bill Kennedy (Jimmy Lydon) invents a new fuel amidst rumors that - horrors - the basketball game might be fixed. River City is not the only town that has trouble starting with a "T" and there's not a pool hall in sight.
Columbia's 34th serial production starring Buster Crabbe, the Serial King himself