What if two had perished at Reichenbach Falls? One simple, disastrous error throws Sherlock Holmes from his intended Hiatus into a tortuous journey of sorrow and remorse. Far from home, broken in body and spirit, the haunted detective fights to survive the single most tragic failure of his career – a fight he cannot win alone. With old and new companions beside him, and a threat as deadly as Moriarty in pursuit, Holmes must find a way to live on without his greatest friend, while saving the rest of his beloved adopted family from a similar fate.