Altprofessor Vogt

Herr Augustin (1 episode)

Polizeipräsident Siedhoff (46 episodes)

Herr Schwarz (1 episode)

Richard Solms (1 episode)

Redering (1 episode)

(1 episode)

Kurt Westphal (1 episode)

Dieter Goetz

Dr. Hase (1 episode)

Greulich

Franz Hansen

Jürgen Hauser

(1 episode)

Dr. Dornfeld

Stephen Winter

self (1 episode)

Narrator (7 episodes)

Dr. Pohl

Gangsterboss

Dr. Wendel (1 episode)

Herr Hirschel (1 episode)

Rudolf Kellner (10 episodes)

Harry

Voice on TV (voice) (uncredited)

Dr. Faber

Klett