Some time between the two World Wars rogue German submarine commander Captain Hans Farrow, his son Jörn, mate Hein Gruber, Doctor Bertram and the rest of his crew sail the South Seas for adventure. After escaping Dutch police in Indonesia, Farrow decides to investigate reports of a giant stingray attacking boats in the Spermonde Archipelago. Will he discover the secret behind the sea monster or fall prey to its deadly attack? The 1930s German dime novel translated into English for the first time. Includes an informative introduction.