Jane and Maura's friendship hits a speed bump after Maura's biological father, gangster Paddy Doyle, is shot.
Howard Stark suddenly returns, possibly creating more trouble for Peggy. Chief Dooley follows a new clue that threatens Peggy's future at the SSR.
Martin involves himself with a heist crew in an effort to win back a dock worker's job; an Israeli boy and a Palestinian boy fight for their relationship; Clea finds documents about Jake; Martin and his wife's sister make a decision.