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One of the first serials produced by that future specialist of the genre, Mascot Pictures, the still-silent Vultures of the Sea was rather more elaborate than the studio's later bread-and-butter fare. Brash light leading man Johnnie Walker played an adventurer whose father is falsely accused of murder and sentenced to death. There is a sunken treasure and plenty of red herrings, including a pre-Frankenstein Boris Karloff and that veteran bruiser Tom Santschi. In the tenth and final chapter, "The End of the Quest," Walker and leading lady Shirley Mason not only unmask the real killer but also recover the sunken treasure.