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Added: Mar 26 2017

Von Stalhein has put an unpleasant proposition to Biggles... 'Unless the missing papers are handed over to the crooks by dawn, Bertie and Colonel Summers will be killed. Biggles is worried that he might have given Von Stalhein a hint that he has found the papers. While the airmen discuss this possibility, Tom sees a movement in the thorn forest... They are being spied upon!