In the second of the Mac MacArthur novels, the retired Ann Arbor Police detective finds himself wondering if Ann Arbor has a steam punk killer on its hands. A bizarre device left in a garage shoots a history professor, sending Mac, Jenn Langton, Andy Patel, and the German Shepherds on a strange hunt. From the Nigerian Civil War to the Ann Arbor Art Fair, they find hints and traces of harm done forty years before. In a story that brings in mechanical engineering, old sewing machines, a touch of romance, and even a brief lesson on speaking German Shepherd, Clash by Night is another journey through a Midwest that’s just a bit darker than everyone expects it to be.