Donald Pleasence

Inspector Calhoun

Norman Rossington

Det.Sgt. Rogers

David Ladd

Alex Campbell

Sharon Gurney

Patricia Wilson

Hugh Armstrong

The "Man"

June Turner

The "Woman"

Clive Swift

Inspector Richardson

James Cossins

James Manfred O.BE.

Heather Stoney

P.C.W. Alice Marshall

Hugh Dickson

Dr. Bacon

Christopher Lee

Stratton-Villiers, MI5

Jack Woolgar

Platform Inspector

Ron Pember

Lift Operator

Colin McCormack

Police Constable 1

Gary Winkler

Police Constable 2

Gary Sherman