Plot outline
Sherlock Holmes and his sidekick Dr. Watson join forces to outwit and bring down their fiercest adversary, Professor Moriarty.
Description
When Austria's crown prince is found dead, the evidence seems to point to suicide. However, detective Sherlock Holmes (Robert Downey Jr.) deduces that the prince was murdered, and that the crime is only a piece of a larger puzzle designed by an evil genius named Moriarty (Jared Harris). Holmes and Watson (Jude Law), accompanied by a Gypsy (Noomi Rapace) whose life Holmes saved, chase Moriarty across Europe in the hope that they can thwart his history-changing plan before it comes to fruition.