i be a child when i saw this serial and a bit after see buck rogers one and both character perform by the same buster crabbe and and i must acknowledge that these film have always be part of the best entertainment i have ever have . the fight against emperor ming be one thing but i be more interested to know about the final fate of the love triangle of flash with dale and aura . barin come and persuade aura to forget flash and very innocent termination of her obsession for good look flash . the serial have no offensive and really violent scene and can be watch by all audience . another thing be that i learn float in water look the way crabbe do it when fight against shark men . the soundtrack be also nice although it be use previously in another film of boris karloff frankenstein . it would be nice to have the dvd of this serial provide that it come with subtitle in spanish ( not yet available ) .