How well do you know BBC's Sherlock? Try our quiz

As the fourth series of Sherlock continues, find out how well you remember the first three seasons of the BBC’s hit show.

Last updated: 14 January 2017 - 5.19pm

Sherlock is back - and the BBC drama based on the works of Sir Arthur Conan Doyle continues to thrill and delight audiences across the world.

While the fourth season continues on Sunday evenings on BBC One, we invite you to see just how well you remember the first three series of Sherlock - not to nention the one-off special shown in 2016.

Scroll down to test your Sherlock knowledge now....


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