DETECTIVE DUO

Castle, 3pm, GREAT! TV

FUN U.S. whodunit that has a Moonlighting-style ‘will they, won’t they’ couple at the centre. One is a man-abouttown author, the other a tough cop with a tougher secret (The Rookie’s Nathan Fillion and Stana Katic). A weekday repeat from the beginning for all eight seasons begins this afternoon.