Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas
Joachim Fuchsberger
as Inspektor Higgins
Uschi Glas
as Ann Portland
Grit Boettcher
as Betty Falks
Siegfried Schürenberg
as Sir John
Konrad Georg
as Keyston
Harry Riebauer
as Mark Denver
Tilly Lauenstein
as Harriet Foster
Ilse Pagé
as Secretary
Siegfried Rauch
as Frank Keeney
Claus Holm
as Glenn Powers
Günter Meisner
as Greaves
Hans Epskamp
as Bannister
