The Sign of Four
Based on The Sign of Four by Sir Arthur Conan Doyle
The great detective is bored, until a young woman arrives looking for her father. Stars Clive Merrison and Michael Williams.
TweetOther Archive resources
![](https://era.org.uk/app/uploads/2023/10/sherlock-The-Final-Problem-400x230.jpg)
Sherlock | S4E3: The Final Problem
Someone has been playing a very long game indeed and, alone and defenceless, Sherlock and Dr Watson face their greatest ever challenge.
![](https://era.org.uk/app/uploads/2023/10/sherlock-The-Lying-Detective-400x230.jpg)
Sherlock | S4E2: The Lying Detective
Sherlock faces perhaps the most chilling enemy of his long career: the powerful and seemingly unassailable Culverton Smith - a man with a very dark secret indeed.