Nick Knatterton has the reputation of being the true master of all detectives, which is due to the fact that - like Sherlock Holmes - he can combine razor-sharp and - if necessary - strike even harder. His secretary Trudchen Taste, who not only adores her boss but also repeatedly attracts negative attention by spreading stupid stories, is a great help to him.
| Actor | Role |
|---|---|
 Karl LieffenNick Knatterton | Nick Knatterton |
| SSusanne CramerGloria Nylon | Gloria Nylon |
 Maria SebaldtVirginia Peng | Virginia Peng |
 Wolfgang WahlTresor-Otto | Tresor-Otto |
 Gert FröbeHugo | Hugo |
 Günter PfitzmannMax | Max |
 Hans von BorsodyEddie Schulz, Journalist | Eddie Schulz, Journalist |
 Wolfgang NeussDiener auf Schloss Rieselkalk | Diener auf Schloss Rieselkalk |
 Wolfgang MüllerGraf Rieselkalk | Graf Rieselkalk |
 Werner FuettererRedakteur | Redakteur |
 Herta KonradTrudchen Taste | Trudchen Taste |
 Stanislav LedinekGustav | Gustav |
| GGert WiedenhofenBobby Schnieke | Bobby Schnieke |
| MMarianne PrenzelNot listed | Not listed |