Sherlock Holmes is the world's greatest detective. Holmes has solved some of the toughest cases out there, but this may be the most difficult yet.

When a wealthy dowager is found dead in a locked room with only a single red rose beside her, Sherlock must team up with Doctor John Watson to discover who is responsible and why. But Holmes has secrets that Watson accidentally uncovers during the investigation. And some secrets are never meant to be revealed. And what connection does the mysterious girl Leila have to the case?