Moriarty the Patriot, Vol. 12 (manga)

Charles Augustus Milverton, the coldhearted King of Blackmail, knows Mary’s dark secret, and he’s using it to destroy any hope she had of marrying Watson! Wanting to save his best friend from the clutches of the deranged Milverton, who ruins innocent lives for fun, Sherlock decides to face the man head-on! Will London’s greatest devil finally face judgment?!