Will the latest Agatha Christie adaptation be a Boxing Day hit?

An early short story by the queen of crime, The Witness for the Prosecution, will be broadcast on 26 and 27 December on BBC1All over the country, Agatha Christie fans are facing a festive dilemma: how to make sure their relatives go to bed before 9pm on Boxing Day ahead of the first episode of The Witness for the Prosecution, the BBC’s new version of Christie’s brilliant short story that she later rewrote as a play.Why not watch it with one’s relatives, who might also be Christ