When another dead elderly gentleman is fished out of the Thames, Inspector David Perkins is convinced that the gorilla gang is active again. On a doll found with the body, characters of an African language are discovered. Together with Sergeant Pepper and language specialist Susan MacPherson, the search for the head of the gang begins.

• Rialto Film
• Taurus Film
• Horst Tappert
• Uschi Glas
• Uwe Friedrichsen
• Hubert von Meyerinck
• Herbert Fux
• Inge Langen
• Beate Hasenau
• Albert Lieven