Moriarty is back, hiding as Professor Adeline Rathe!

She kidnapped Sherlock to force Enola into locating stolen Afghan gold linked to a brutal wartime cover-up.

The "Adeline Rathe" clue actually pointed to a sunken ship, not a person.

With the mystery solved and the gold recovered, Enola and Tewkesbury finally tie the knot in a stunning, secret cliffside ceremony.