Could a woman die of fright alone? And who is the sender of a most grizzly package – two human ears in a box? Holmes and Watson tackle a whole host of new mysteries before Baker Street’s most famous detective finally leaves London for the quiet of a Sussex farm. But one final adventure puts an end to his retirement. As Britain stands poised on the brink of the First World War, can Sherlock Holmes keep a terrible new super-weapon from falling into the enemy’s hands?
In this TV tie-in edition to the classic novel, Sherlock and Dr Watson receive a visit from Mary Morsten, who offers up a particularly cryptic puzzle for them to solve. Her father went missing six years ago and since then she has received a pearl for every year he has not re-appeared. Now, the treasure's sender has requested a meeting and she would like Sherlock and Watson to accompany her. Finding the mystery benefactor is only the start of this adventure, that puts Sherlock and Watson hot on the trail of cold-blooded killers and thieves, and a lost Indian fortune.
After his deadly plunge over Reichenbach Falls, Sherlock Holmes seemed gone forever – but, as mysteriously as he left, he returns three years later. Now, reunited with Watson, a host of thrilling new adventures through London’s underworld awaits, battling thieves, kidnappers and killers alike. But Holmes is about to meet his most despised villain yet: the dastardly Charles Augustus Milverton.