Captain W. E. Johns Biggles #5

This volume collects the full text of Captain W. E. Johns' 1962 novel, in which Biggles and his team are tasked with investigating a series of mysterious explosions threatening the British naval base at Gibraltar. The story, part of the long-running Biggles adventure series, pits the air police against a cunning saboteur operating in the shadow of the famous Rock. Published by Hodder & Stoughton in 1983 as part of their uniform edition of Johns' works.