About Elementary Season 5, Episode 16 : Fidelity

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. Guest Stars: Nelsan Ellis, Marianne Muellerleile, Scott Shepherd, Alan Rosenberg, Rachel Christopher, Marlie Hall, Connor Bond, Steve Key, Jim Piddock, Blair Brown, Ophelia Lovibond, Tim Guinee,