as Charles Harold Calthrop
as Sam's Grandfather
as Dr. Joseph
as Earl of Arundel
as Dieter Stahl
as Mr. Brownlow
as Mr. Wood
as Lord Dunning
as Dr. John Watson
as Zachariah
as Sir Arthur Conan Doyle
as Gov. John Bellingham
as Heaviside
as Lord Stanley
as Approved School Principal
as Montano
as Jonathan
as Lambert
as Professor Proctor
as Mitchell
as Warnie Lewis
as George - English Boy (uncredited)
as Dr. Pierre Dubois
as Captain Paul Winter
as Marcus
as Mike McCarthy
as Ulvik
as Mr. Wickfield
as Dr. Frank Yarrow
as Pierre Chandebisse, Victor's Nephew
as Brinson
as Richard Bannerman
as Gifford
as Paediatrician
as Ludovico H. Holly
as Gareth
as Dr. Alan Lyle
as Morris Dixon
as Mr. Girton
as Clive
as Henry Angkatell
as Dr. Paul Richards
as Patrick Siddons
as Judas
as Tommy Bayne
as Dr. John H. Watson
as Bellcourt
as Kinloch
as Capt. Pat Grant
as Christmas Humphries
as Guy Phillips
as Biberstein
as Arthur
as Enrico Fermi
as Gavin Barlow
