Debut novelist of a certain age. I recently self-published (through Amazon KDP) my spy thriller 'Unity'. Sub-titled 'Peace for All, Freedom for None', it is set in London in 1967, against the background of the Cold War.
My only other self-published work was a travel memoir (2015) called 'Against the Current', about the year my wife and I spent travelling the inland waterways of France on our boat and the (mis-)adventures we had.