The Man From Berlin by Luke McCallin

This is an excellent mystery story featuring a German Abwehr (military intelligence) officer in Yugoslavia in World War Two. Captain Gregor Reinhardt is a decorated First World War veteran, a former Berlin detective, and a man of conscience trying to hold on to his integrity in a world given over to the devil. He is called on to investigate the murders of another Abwehr officer and a female journalist which, naturally, are more than they seem. Reinhardt has to navigate the treacherous waters of Nazi and Wehrmacht bureaucracy, not to mention the local Yugoslav authorities and Communist partisans to boot. The book has a strong moral depth and profoundly investigates the questions of the end justifying the means, and what it means to maintain integrity in a world without true law.

I listened to this story as an audiobook while running.

Cover Her Face by P.D. James

The first Adam Dalgleish mystery novel, a classic locked room mystery. Listened to audiobook while running.

Aquinas by Edward Feser [re-read]

I've read the book, now I've listened to the audiotape while running.