The Baron

'The Baron' series of novels was written/published between 1937 ('Meet the Baron') and 1979 ('Love for the Baron'), with a total of 47 books in the series. John Creasey also wrote the novels upon which 'Gideon's Way' was based, as well as several hundred other mainly detective novels, under a number of pseudonyms. They are all reprinted now under the authorship of John Creasey (when they ARE reprinted...)

It's curious that he's not credited here for The Baron series, as many of the character names and the basic plot are directly from the novels.