John Buchan 
Huntingtower 

Huntingtower is a novel written by John Buchan in 1922. The first of his three Dickson Mc Cunn books, it is set near Carrick in south-west Scotland around 1920. The hero is a 55-year-old grocer Dickson Mc Cunn, who has sold his business and taken early retirement. As soon as he ventures out to explore the world, he is swept out of his bourgeois rut into bizarre and outlandish adventures, and forced to become a reluctant hero.