Cyankali

Renate Krößner

as Hete

Ursula Braun

as Mutter Fent

Hermann Beyer

as Paul

Horst Hiemer

as Prosnick

Rolf Römer

as Kuckuck

Jörg Panknin

as Max

Annekathrin Bürger

as Frau Klee

Heinz Behrens

as Dr. Möller

Marianne Wünscher

as Madame Heye

Berthold Schulze

as Kriminalkommissar

Birgit Frohriep

as Dame beim Arzt

Günter Maaß

as Wachtmeister