This is the classic German "buddy" crime series, which brings together two opposite personalities, the Lawyer and the Detective, to solve murders and acquit falsely accused suspects. The Lawyer was originally Strack's Dieter Rentz, a corpulent, cultured, highly professional and dedicated advocate and bon viveur, who dreaded only two things: steep stairways and having to drink cheap plonk out of a paper cup. The Detective was Gärtner's Josef Matula, a diminutive, jovial, leather jacket-wearing ex-cop who liked to have a beer and a pool cue at hand, when not sniffing around in the underworld, charming the ladies and smooth-talking himself into and out of tricky situations. Lawyers have since come and gone, but Matula has remained the show's constant, still charming, streetwise and mostly leather-jacketed at over sixty. At the same time, the original dynamic between protagonists has degraded, as successive Lawyers have become noticeably younger than Matula and almost as capable of physical action as he is. Still, a nice rapport has been established between Matula and the latest Lawyer, Frielinghaus' quietly charismatic Lessing.
The show's charm has lot to do with its comfortable sameness. While its look has had a few cosmetic (and rather unnecessary) updates in the 2000s, it still runs according to a familiar pattern. There is a crime, almost inevitably a murder. The Lawyer ends up representing the prime suspects who swear their innocence but are so miserly with truth that the Lawyer has to drag it out of them and fight to keep his clients from getting banged up without further ado. Matula does most of the legwork, often gets to hang around strip clubs or brothels (this is a German crime series, after all), sometimes gets roughed up a bit but eventually helps to uncover the truth. There has been an occasional downbeat ending, but generally the innocent client is saved and all turns out well.
When it began, the series brought a breath of fresh air, humour and vigour to the more civil-servant like matter-of-factness of many previous Krimis (as did Tatort's lovable lout detective Schimanski around the same time). Quarter of a century later it is quite mild and cosy a thing to watch, the television equivalent of comfortable old shoes. Its most iconic part is Klaus Doldinger's original theme music, an irresistibly jaunty synthesizer instrumental that was sacrilegiously remixed for the opening credits during the series' face-lift in the 2000s.