AllMovie

Originally released in England by British Consolidated, Sons of the Sea was the last film to be distributed in America by Grand National Pictures. Generally cast in villainous roles, Leslie Banks plays the film's true-blue hero Captain Hyde. Alas, Hyde's young son Philip (Simon Lack), though a graduate of the Royal Naval College at Dartmouth, does not possess the noble purpose of his father, and soon finds himself inadvertently involved with a foreign spy. But with the British Secret Service involved, the villains don't stand a chance.