Still in hiding, Oskar identifies high-powered suspects but can't connect them to Mephisto. When Oskar arranges a rendezvous with Mephisto, he finds himself in the middle of an assassination attempt that could precipitate a world war.

1900s Vienna is a hotbed of philosophy, science and art. Dr. Max Liebermann’s extraordinary skills of perception and Detective Inspector Oskar Rheinhardt’s determination lead them to some of the city’s most mysterious and deadly cases.