Die unheimlichen Briefe

Gunter Berger

— Inspektor Higgins

Mariella Ahrens

— Barbara Lane

Eddi Arent

— Sir John

Rosalind Baffoe

— Ann Pattison

Udo Schenk

— William Bolden

Julia Richter

— Peggy Lynch

Helen Vita

— Lady Upperworth

Eva Ebner

— Miss Thinwhister

Klaus Lehmann

— Stephen Scott

Peggy Lukac

— Ruth Bolden

H.H. Müller

— Tom Averil

Georg Tryphon

— Mr. Nelly

Mogens von Gadow

— Robert Frazer

Axel Prahl

— Taxi driver