Enough Nemesis to Go Around

S3, E1: Holmes returns to New York with a new apprentice and a renewed interest in working with the NYPD after being fired by London's MI6. However, Captain Gregson won't let him resume consulting for the department without permission from his former partner, Watson, the NYPD's new go-to private investigator. Gina Gershon and Ophelia Lovibond guest star.