A German-Austrian crime series which features the detectives Oberländer and Zeiler who are investigating murder cases across the national border. Shot mainly on locations in the city of Bregenz and the surrounding area at Lake Constance.A German-Austrian crime series which features the detectives Oberländer and Zeiler who are investigating murder cases across the national border. Shot mainly on locations in the city of Bregenz and the surrounding area at Lake Constance.