Holly Chou

Holmes and Watson investigate a mass murder when a chef and his patrons are poisoned after dining on a tasting menu tainted with snake venom. Also, Detective Bell's crush on a work colleague makes Holmes realize his and Fiona's (Betty Gilpin) relationship is at an important crossroads.

After President Dalton hears about a sonic attack at the U.S. Embassy in Bulgaria, he thinks Russia is to blame and uncharacteristically threatens them with military force, leaving his cabinet concerned about his mental status. Christine Ebersole guest stars as Lydia Dalton, the president's wife. (TV-14 L)

Liza and Diana convince Pauline to lie about her marriage while promoting her book, and Kelsey and Zane compete for a former presidential speechwriter's prospective memoir.