Intent on recapturing the plane, Bertie and Colonel Summers take advantage of the darkness, and trick one of the men ashore with the dinghy. After disposing of the man, they row quickly out to the Catalina, but when Zoratov, peering through the entrance, recognises them he slams shut the hatch, locking the Englishmen out of their aircraft. Biggles too has plans to recapture the plane...