Mandrake (Warren Hull) is on an ocean liner doing card tricks, and trying to avoid being shot by random hoodlums. Meanwhile, Professor Houston (Forbes Murray) is perfecting his new radium ray cannon but the technology is wanted by the maniacal villain The Wasp. Houston is kidnapped by The Wasp's henchmen.
Can Mandrake and Houston's daughter Betty (Doris Weston) save the day in a series of death defying cliff hangers?
This is marvellously pulpy tosh though very entertaining all the same. It has all the ingredients for a decent 1930s serial and works very well overall though will get a bit a repetitive in the end as these serials tend to do. Great fun and The Wasp is a piece of genius.
