Inspector Calhoun

Donald Pleasence

Acting

Det.Sgt. Rogers

Norman Rossington

Acting

Alex Campbell

David Ladd

Acting

Patricia Wilson

Sharon Gurney

Acting

The "Man"

Hugh Armstrong

Acting

The "Woman"

June Turner

Acting

Inspector Richardson

Clive Swift

Acting

James Manfred O.BE.

James Cossins

Acting

P.C.W. Alice Marshall

Heather Stoney

Acting

Dr. Bacon

Hugh Dickson

Acting

Stratton-Villiers, MI5

Christopher Lee

Acting

Platform Inspector

Jack Woolgar

Acting

Lift Operator

Ron Pember

Acting

Police Constable 1

Colin McCormack

Acting

Police Constable 2

Gary Winkler

Acting

Publican

James Culliford

Acting

Prostitute

Suzanne Winkler

Acting

Tunnel Worker

Gerry Crampton

Crew

Tunnel Worker

Terry Plummer

Acting

Tunnel Worker

Gordon Petrie

Acting