Biggles and the Poor Rich Boy by Capt. W.E. Johns

‘This is the queerest sort of kidnapping case I’ve ever run into,’ vowed Eddie Ross, U.S. member of Interpol, who himself had brought this full-sized headache across the Atlantic for Biggles to solve. In their quest for kidnapper Cornelli and his hostage Carlo Salvatore, Biggles & Co. are forced to maintain an aerial shuttle service between London and Scotland, but it was by the turbulent waters of a Highland salmon river that the last grim gun battle took place.