When Holmes and Watson set out to track down a civil contractor who leaked classified information, their lives are disrupted when they are targeted by the group of cyber-activists protecting him. Meanwhile, Joan takes the advice of a friend and signs up for an online dating service.
Elenco: Jonny Lee Miller , Lucy Liu , Jon Michael Hill , Aidan Quinn , John Noble , Natalie Dormer , Ophelia Lovibond , Rhys Ifans , Sean Pertwee .