Nambi E. Kelley

Flashbacks reveal Finch's creation of the machine; Reese hits the road, leaving the team to deal with the aftermath of their war with HR.

With Watson kidnapped, the Holmes brothers are extorted to buy her back by acquiring something the gangsters greatly value. As the clock runs down on Watson's life, Sherlock is forced to work with his estranged brother Mycroft.

Elizabeth makes a secret trip to Iran in hope of preventing a coup that could impact President Dalton's administration; Elizabeth's staff is brought up to speed on the investigation into Marsh's death.