Photo model Monika Stange is found murdered in her apartment in a major West German city. Detectives Bentheim and Laube find rough diamonds hidden in the apartment. The trail leads to a racketeering ring and the influential industrialist Dr. Vogelsang. The latter is not prepared to get involved in the murder case under any circumstances and refuses to testify. Inspector Laube tries to solve the case without his colleague.
as Kriminalassistent Bentheim
as Hanna Stern
as Kriminalinspektor Laube
as Lydia Amberger
as Dr. Ingo Vogelsang
as Gitte Moosbauer
as Monika Stangel
as Herr Brösel
as Peter Lacour
as Dr. Sauer
as Herr Amberger
as Kriminaltechniker
as Fahrer
as Krüger
as Siegfried
