Rachel Christopher

Joan and Kitty try to prove that a string of murders, stemming from an old case Sherlock and Kitty solved in London, is connected to an international government conspiracy with the Defense Intelligence Agency at its center. Also, Sherlock and Kitty's relationship is strained after she shares life-changing news.

As the 20th anniversary of the American embassy bombing in Mali approaches, emotions run high among the State Department staff, who had personal connections to lives lost that day, including Elizabeth, who must decide if the U.S. should lift sanctions against the country deemed responsible. Also, Henry tries to help Jason break up with Piper.