Diretor/a
Julia Smith
DIRETOR/A
Elenco (na ordem dos créditos)
Alec McCowen
Alexander Graham Bell
Francesca Annis
Mabel Hubbard
John Woodnutt
Mr. Hubbard
John Phillips
Professor Bell
Clive Endersby
Thomas Watson
Andre Dakar
Jonas
Peter Carlisle
Mr. Sanders
Mary Barclay
Mrs. Hubbard
Jenny Agutter
Grace Hubbard
Judy Geeson
Berta Hubbard
Jean Anderson
Jeannie MacEwan
Warren Stanhope
Elisha Gray
Michael Crockett
George Sanders
Barbara Cavan
Mrs. Bell
Susan Crawford
Sarah Fuller
Alan Tilvern
Mr. Orton
Robert James
George Brown
Hal Galili
Ballachey
Larry Cross
Dr. Ferguson
Elizabeth Begley
Mrs. Connor
James Urquhart
Lord Provost
George Woolley
Mr. Richards
Bruce Boa
MacDonald
Ian Fleming
Dr. Jamieson
Archie Duncan
Mr. Tweedie
John Bott
Temple
Tom Watson
Ben Herdman
Blake Butler
A watchman
Peter Fraser
Melville-Bell
Robert O'Neil
Customs Official
Jameson Clark
Matthews
Elspeth Duxbury
Mrs. Tweedie
Derek Keith
Walter Tweedie
James Balfour
Reporter
Jack Holloway
Masters
Pete Daly
Oliver Ringrose
Don Smith
Dunlop
Ian Dyson
Griffin