The Man from Berlin: Gregor Reinhardt series, Book 1

In war-torn Yugoslavia, a young film maker and photographer and a German officer have been murdered. Assigned to the case is military intelligence officer Captain Gregor Reinhardt. Already haunted by his wartime actions, he soon finds that his investigation may be more than just a murder - and that the late Yugoslavian film maker may have been much more brilliant - and treacherous - than anyone knew.