Solve our 'Sherlock' contest to win a Series 4 Blu-ray!

To celebrate this week's release of 'Sherlock: Series 4' on Blu-ray and DVD, we have 10 Blu-rays to give away thanks to our friends at Roadshow Home Entertainment.

In this eagerly anticipated fourth series, Sherlock is back on British soil once more, while Doctor Watson and Mary prepare for their biggest ever challenge - becoming parents for the first time. The hit drama returns with three new episodes promising laughter, tears, shocks, surprises and extraordinary cases.

To go into the running to win a prize, simply correctly answer the following question:

Name the British author of the original Sherlock Holmes stories?

To enter, simply 'like' this post and share via Facebook or Twitter and send your answers, along with your postal address to ben at TweakTown dot com before the competition closes on February 18.

'OSherlock: Series 4' is available on Blu-ray and DVD at leading Australian retailers from February 15.