3/3 The return of Moriarty. The crime of the century. Can Sherlock possibly survive?
First broadcast: 15 Jan 2012
2/3 A hound from hell. Sherlock's most famous case. But is a monster really stalking Dartmoor?
First broadcast: 08 Jan 2012
1/3 Blackmail threatens the monarchy, and Sherlock is about to meet the woman who beats him.
First broadcast: 01 Jan 2012