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.
Horst Tappert
Insp. David Perkins
Uschi Glas
Susan McPherson
Uwe Friedrichsen
Sgt. Jim Pepper
Hubert von Meyerinck
Sir Arthur
Herbert Fux
Mr. Sugar
Inge Langen
Oberin
Beate Hasenau
Cora Watson
Albert Lieven
Henry Parker
