Catherine Cawood (Sarah Lancashire) is about to retire from her job on the police force when the discovery of human remains near a reservoir ultimately leads to another showdown between her and her daughter's ex-boyfriend/serial killer.  This review focusses on the last season of Happy Valley, including background info on the show, trivia, and whatever else we could think of. Tune in to hear our rating and join the discussion. Welcome to another edition of Today's Episode!