Ronald Howard

as Sherlock Holmes (archive footage)

as Halsey

as Dr. Ross

as Dr. John Dartington

as Watt Nelson

as Insp. Huntington

as Sanders

as Wing Commander Hayes

as Hugo Copp

as le capitaine Robinson

as John Bray

as Edmund of Cornwall

as Dr. Harold Golfrey

as Capt. Johns

as Robin Hood

as Inspector Gordon

as Captain Manning

as Tony

as Brian Eastley

as Spencer

as Mr. Claridge

as Uncle Dick

as Dick Shannon

as Paul Adams

as Jeremy

as Robert Penrose

as Dr. Edward Stone

as Martin Gresham

as Sanders

as Bob Jenson

as Fitzpatrick

as Frank

as Colin Chandler

as John Miller

as Paul Delafield

as Captain Avril

as Clay Allen

as Robert Grant

as Anthony Hardwick

as Peyton Farquhar

as James Howgill

as Sherlock Holmes

as Det. Sgt. Fitzgerald

as Cpl Nicholas Brayne

as Dr. Evershed

as David Evans

as Dr.John Winnington

as Inspector Carson

as John Harper

as Gilbert

as Detective Inspector Carson

as Purley

as Ralph Hingston

as Hilary Boscombe

as Sir Andrew Ffoulkes

as Roberts

as Andrei

as Steve Winter

as Harold Dakers

as Andy Kendall

as Earl of Harpenden

as Minor Role