David Suchet: Final Poirot scene 'hardest of my career' Actor David Suchet has said performing the last scene of the final episode of Poirot was "the hardest day's filming of my career." The ITV adaptations of Agatha Christie's novels are set to end on Wednesday after 25 years, and the man playing the protagonist has been telling BBC Breakfast about his time on the show. He also explained why he has had so many moustaches and revealed the funniest thing to ever happen to him.