In 1866 London, Dr. Julia Lewis, when grisly murders happen all over the city, works with Inspector Richard Tennant to understand a killer's dark obsessions and motivations, facing off against a fiendishly calculating opponent who has set his sights on Julia.

In 1924 London, when shy academic Lao She meets larger-than-life Judge Dee Ren Jie, these unlikely allies investigate the murders of Chinese immigrants, all stabbed to death with a butterfly sword and must connect the dots to catch a killer before they become victims themselves.

"London, 1943. Across the city, prominent figures in science and the military are bursting into flame and being incinerated. Convinced that the Germans have deployed a new terror weapon, a desperate government turns to the one man who can track down the source of this dreadful menace--Sherlock Holmes. The quest for a solution drives Holmes into an uneasy alliance with the country's most brilliant scientific genius, Professor James Moriarty. Only Sherlock...