Henry James' 1898 novel "The Turn of the Screw" inspired this ghost story, in which a governess (Valerie Bertinelli) comes to believe that her two orphaned charges, ages 8 and 10, are possessed by evil spirits. Miles: Aled Roberts. Flora: Florence Hoath. Mrs. Groath: Diana Rigg. Barnaby: Michael Gough. Peter Quint: Christopher Guard.