Private eye Dold, a specialist in surveillance tasks, is sent to investigate a Frankfurt bordello boss. He's a pain in the butt for many in the red-light district and is to be overthrown to pave the way for financially strong speculators to lucratively redevelop the area. Dold, who always saw his work as morally justified, comes to doubt the rightness of his actions far too late.

Armin Mueller-Stahl
as Dold

Wolf-Dietrich Berg
as Charly

Brigitte Karner
as Margot Fiala

Horst Bollmann
as Schober

Wilfried Baasner
as Meilick

Berth Wesselmann
as Gersdorf

Michael Degen
as Ernest Fischer

Johann Adam Oest
as Dr. Schwenecke

Ruth Hoffmann
as Mrs. Rodinski

Manfred Boehm
as