Holmes and Watson's evening is disturbed by a gruesome find by cabbie Henry Wiggins. A cryptic note and a freshly severed finger triggers a desperate search for its owner. Mycroft is summoned when the involvement of Julia Moriarty is discovered. Holmes has a tense encounter with Moriarty and must balance an arms shipment to a potential enemy against a mans life. Finally, it appears that Julia Moriarty has defeated Holmes...but all may not be as it seems.