Is it the unique combination of police procedural and medical drama that fascinates viewers? Or the blend of "crime lite" and comforting doctors? Part of this series' success is its two dashing teams of helpers: one based around the cops of Police Precinct 21, the other around the medical team that works with them. They're on duty in Hamburg's docklands and harbor district, from St. Pauli's red-light zone to the luxury villas of the Elbchaussee.