AGATHA CHRISTIE: LUCY WORSLEY ON THE MYSTERY QUEEN

BBC Two, 9pm; NI, 11pm

The historian concludes her engaging biography of the “elusive and enigmatic” writer by examining the author’s later life. In 1930, after a painful divorce, Christie married archeologist Max Mallowan and entered her most prolific period. She also accompanied him on several digs – leading to some of her best-known works, including Death on the Nile.