How see How They Run director avoided spoiling The Mousetrap

See How They Run director Tom George has reassured Agatha Christie fans that he and the team around the movie have been very careful to avoid spoiling Christie's play .West End audiences have been told to keep the ending of the murder-mystery play to themselves ever since it was first staged way back in 1952 — making it the longest-running continuous production in history. George's film, penned by British comedy veteran Mark Chappell, follows police officers played by Sam Rockwell and Saoirse Ronan as they investigate a death at the theatre where the play is being performed.See How They Run is in UK cinemas from 9 September.