Q.E.D.

Sam Waterston

Professor Quentin Everett Deverill· 6 ep

George Innes

Phipps· 6 ep

A.C. Weary

Charlie Andrews· 6 ep

Julian Glover

Dr. Stefan Kilkiss (voice)· 5 ep

Caroline Langrishe

Jenny Martin· 5 ep

Sarah Berger

Betsy Stevens· 1 ep

Richard Morant

Richard Stevens· 1 ep

Frederick Jaeger

Kaiser Wilhelm II· 1 ep

Robert Harris

Judge· 1 ep

Ronald Lacey

Medium· 1 ep

John Abineri

Staff Officer· 1 ep

Robert Arden

University President· 1 ep

Billy J. Mitchell

Professor· 1 ep

Robert Henderson

Old Professor· 1 ep

Edward Wiley

Young Professor· 1 ep

Constantine Gregory

German Commander· 1 ep

Paul Jerricho

German Sergeant· 1 ep

Kenneth Owen

German Corporal· 1 ep

David Baron

Guest at Séance· 1 ep

Michael Stroud

Guest at Séance· 1 ep

Jean Burgess

Lady at Séance· 1 ep

Michael N. Harbour

Fisherman· 1 ep

Wolf Kahler

Technician· 1 ep

Steve Ubels

Technician· 1 ep

Paul Humpoletz

Flunkey· 1 ep

Tim Woodward

Harry Owsley· 1 ep

Manning Redwood

Henry Ford· 1 ep

George Baker

Sir Harold Metcalfe· 1 ep

Henry McGee

Bassey· 1 ep

Franco De Rosa

Brunelli· 1 ep

Jeff Harding

Barney Oldfield· 1 ep

Eiji Kusuhara

Count Oyama· 1 ep

Gordon Rollings

Adcock· 1 ep

Robin Parkinson

Steward· 1 ep

Jonathan Burn

Lecours· 1 ep

Bill Reimbold

American Reporter· 1 ep

Olivier Pierre

French Reporter· 1 ep

David Shaughnessy

Official· 1 ep

Ian Ogilvy

Lord Sidney Sarandon· 1 ep

Barrie Houghton

Kalnikov· 1 ep

George A. Cooper

Lord Eastleigh· 1 ep

Eric Kent

Blake· 1 ep

Bibs Ekkel

Hungarian· 1 ep

Patsy Smart

Old Woman· 1 ep

Francine Morgan

Dolly· 1 ep

Tony Caunter

Foreman· 1 ep

Ron Pember

Cabbie· 1 ep

Michael Burrell

Official· 1 ep

Terry Cowling

Bomb Man· 1 ep

Paul Freeman

Professor Vincent Rep· 1 ep

Elizabeth Shepherd

Lady Potts· 1 ep

Paul Angelis

Kroll· 1 ep

Chris Jenkinson

Van Else· 1 ep

David Auker

Dutch Taxi Driver· 1 ep

Amy Dagley

Young Dutch Girl· 1 ep

Ingo Mogendorf

Swarthy Man· 1 ep

Brenda Cowling

Nun on Train· 1 ep

Thea Ranft

Dutch Girl's Mother· 1 ep

Benjamin Feitelson

French Chauffeur· 1 ep

Jean Anderson

Lady Euphemia Martin· 1 ep

Cyril Luckham

Crabtree· 1 ep

Shelagh McLeod

Caroline Makepeace· 1 ep

John Vine

Gareth Makepeace· 1 ep

Pauline Quirke

Jane· 1 ep

Ann Way

Minnie· 1 ep

Burt Kwouk

Dr. Lin· 1 ep

Peter Cellier

MI5 Man· 1 ep

Sarah Lam

Priscilla· 1 ep

Timothy Bateson

Alfie· 1 ep

Derek Deadman

Badger Wiggins· 1 ep

Barry Dennen

Al Russell· 1 ep

Rolf Saxon

American Associate· 1 ep

Alfie Curtis

Referee· 1 ep

Mike Lewin

Inspector Draycot· 1 ep

Peggy Ann Clifford

Large Lady in Shop· 1 ep

Carol Harrison

Tarty Girl· 1 ep

Cyril Cross

Policeman· 1 ep

Simon Henderson

Office Boy· 1 ep