Vincenzo Amato

Sherlock is forced to work with his estranged brother, Mycroft, in order to solve a case that has life-or-death consequences.

When Mycroft returns to New York, his motivations cause problems between Joan and Sherlock; an investigation brings Sherlock and Watson to the world of unmanned aeronautics.

After a shocking event occurs on American soil, Elizabeth must answer President Dalton's questions about how it happened.

When Lawyer Elsbeth Tascioni is arrested putting a case she's working on in Jeopardy, Alicia, Will and Diane step up to aid the quirk Litigator. Meanwhile, Peter is presented with conflicting pieces of advice from Eli and Jordan. Carrie Preston, Maura Tierney and T.R. Knight guest star.