| Name | Character | Episodes |
|---|---|---|
| Eduard Linkers | Inspektor Evans | 39 |
| Josef Meinrad | Pater Brown | 39 |
| Peter Capell | Sir Aren | 1 |
| Dieter Borsche | Henry Baker | 1 |
| Karl Lieffen | Mister Level | 1 |
| Eckart Dux | Tom | 1 |
| Hans Elwenspoek | Mr. Appeldorn | 1 |
| Günther Stoll | Pensionsbesitzer | 1 |
| Gerd Baltus | Robert Musgrave | 1 |
| Udo Vioff | Privatsekretär Taylor | 1 |
| Walter Sedlmayr | Privatdetektiv Muggleton | 1 |
| Simone Rethel | Freundin des Pensionsbesitzers | 1 |
| Wolf Ackva | Mr.Right | 1 |
| Herbert Weißbach | Professor | 1 |
| Sigurd Fitzek | Arzt | 1 |
| Ellen Umlauf | Lady Miriam | 1 |
| Herbert Fux | 1 | |
| Joachim Hansen | Captain Vain | 1 |
| Michael Hinz | Barridge | 1 |
| Klaus Löwitsch | David Drews | 1 |
| Horst Sachtleben | Diener | 1 |
| Werner Peters | Senior Mendozza | 1 |
| Alexander Kerst | Sir Claude | 1 |
| Walter Kohut | Hugh Romain | 1 |
| Joost Siedhoff | Gärtner | 1 |
| Rudolf Schündler | Dr. Donovan | 1 |
| Ilona Grübel | Peggy | 1 |
| Wolfried Lier | Wicks | 1 |
| Willy Semmelrogge | Rechtsanwalt Littleton | 1 |
| Friedrich Joloff | Richter | 1 |
| Lisa Helwig | Mrs.Dibble | 1 |
| Claus Biederstaedt | Mr. Slatter | 1 |
| Sigfrit Steiner | Diener | 1 |
| Albert Lieven | Lord Seymore | 1 |
| Manfred Seipold | Mister Floyd | 1 |
| Heinz Ehrenfreund | Mr. Hunter | 1 |
| Günther Neutze | Yogameister | 1 |
| Diana Körner | Maureen Right | 1 |
| Georg Lehn | Mr. Andrew | 1 |
| Horst Naumann | Oberst Cutler | 1 |
| Werner Pochath | Joe Henning | 1 |