There's an old 70s Austrian TV series called "Kottan ermittelt"[1]. The first episode of that one is essentially exactly that with the titular character pursuin

There's an old 70s Austrian TV series called "Kottan ermittelt"[1]. The first episode of that one is essentially exactly that with the titular character pursuing immigrants as suspects and the crime eventually being solved by his assistant. The later episodes turn the show more into a parody. [1] https://en.wikipedia.org/wiki/Kottan_ermittelt https://en.wikipedia.org/wiki/Kottan_ermittelt