Biggles' secret assignments

Biggles' Second Case: Biggles hunts for a wartime German submarine, the U-517, whose ruthless captain, Von Shonbeck, has escaped to the Antarctic with a horde of stolen gold bullion.; Biggles Breaks the Silence: Back in the Antarctic once again, Biggles tracks down a ship frozen in the pack ice with a hold full of treasure and does battle with a gang of desperate villains while attempting to recover the ship's cargo.; Biggles Gets His Men: Biggles is tasked with the dangerous mission of finding and rescuing a group of important scientists who have been kidnapped and smuggled to a remote region of China.; Biggles Follows On: Biggles comes up against his arch enemy, Erich Von Stalhein, and teams up with Gimlet King's special forces unit behind enemy lines in Korea.