Der König von St. Pauli
Starring Bernd Stegemann, Hilmar Thate, Henry Hübchen, Alexander Radszun, Julia Stemberger, Andrea Sawatzki, Claude-Oliver Rudolph, Karoline Eichhorn, Heinz Hoenig, Sonja Kirchberger
It's a crime and drama show, and has a rating of 6.2 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from Singapore.