Where to Watch in
Free
hd
Subscription
hd
Purchase
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4.99$
Plot
Hired by a young lady, Sherlock Holmes and Dr. Watson investigate the strange recent deaths of her missing father's friends from the army, as well as the whereabouts of the Great Mogul, the second-largest diamond in the world.
Where to watch The Sign of Four?
The Sign of Four is an adventure movie featuring Ian Richardson.
The Sign of Four is currently streaming for free (ad-supported) on Pluto TV, Tubi TV and VUDU Free and it's also available on Amazon Prime Video.
It is also possible to buy The Sign of Four on Amazon Video.