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
as Insp. David Perkins
Uschi Glas
as Susan McPherson
Uwe Friedrichsen
as Sgt. Jim Pepper
Hubert von Meyerinck
as Sir Arthur
Herbert Fux
as Mr. Sugar
Inge Langen
as Oberin
Beate Hasenau
as Cora Watson
Albert Lieven
as Henry Parker
Ilse Pagé
as Miss Finley
Hilde Sessak
as Schwester Elizabeth
Ralf Schermuly
as Edgar Bird
Maria Litto
as Gloria
