The multi award-winning drama is back as Sherlock and John Watson return to face the ultimate test in three of their most famous cases: the Woman, the Hound, and the Fall. Becoming embroiled in the complex plans of the dangerous and desirable Irene Adler, Sherlock needs every one of his remarkable skills to survive, and an invitation to the wilds of Dartmoor brings our terrified heroes face to face with the supernatural. Meanwhile, James Moriarty, still out there in the shadows, is determined to bring Sherlock down - whatever the cost.