Currently available on 6 streaming services.

The Sign of Four streaming: where to watch online?

Currently you are able to watch "The Sign of Four" streaming on Amazon Prime Video, Amazon Prime Video with Ads or for free with ads on VUDU Free, Tubi TV, Pluto TV, Xumo Play. It is also possible to rent "The Sign of Four" on Amazon Video online and to download it on Amazon Video.

Cast

Ian Richardson
Sherlock Holmes
David Healy
Dr. John Watson
Thorley Walters
Major John Sholto
Michael O'Hagan
Mordecai Smith
Cherie Lunghi
Mary Morstan
Joe Melia
Jonathan Small
Terence Rigby
Inspector Layton
Clive Merrison
Bartholomew Sholto
Richard Heffer
Thaddeus Sholto
John Benfield
McMurdo
Gordon Rollings
Mr. Sherman
John Pedrick
Tonga
Robert Russell
Williams
Moti Makan
Lal Rao
Kate Binchy
Maid
Merelina Kendall
Mrs. Smith