The Trygon Factor: Cast

Stewart Granger
Superintendent Cooper Smith

Susan Hampshire
Trudy Emberday

Cathleen Nesbitt
Livia Emberday

James Culliford
Luke Emberday

Brigitte Horney
Oberin

Robert Morley
Hubert Hamlyn

Sophie Hardy
Sophie

Colin Gordon
Dice

Eddi Arent
Clossen

Diane Clare
Clare

Allan Cuthbertson
Det. Thompson

Yuri Borienko
Nailer
Conrad Monk
Pasco

John Barrett
Guide

Jeremy Hawk
Bank Manager

James Robertson Justice
Sir John (voice)
Monika Dietrich
Photographic Model

Siegfried Schürenberg
Sir John