John Malkovich Hercule Poirot Actor Rupert Grint Inspector Crome Actor Andrew Buchan Franklin Clarke Actor Eamon Farren Cust Actor Jack Farthing Donald Fraser Actor Gregor Fisher Dexter Dooley Actor Tara Fitzgerald Lady Hermione Clarke Actor Shirley Henderson Rose Marbury Actor Bronwyn James Megan Barnard Actor Freya Mavor Thora Grey Actor Eve Austin Betty Barnard Actor Anya Chalotra Lily Marbury Actor Cyril Nri Father Anselm Actor Suzanne Packer Capstick Actor Michael Shaeffer Sergeant Yelland Actor Christopher Villiers Sir Carmichael Clarke Actor Tamzin Griffin Alice Asher Actor Terenia Edwards Miss Leigh Actor Lorenzo Harani Refugee Man Actor Karen Westwood Mrs Kirkham Actor Liam Hourican Radio Announcer Actor Conrad McCroddan Beautiful Young Man Actor Ash Matthews Beddows Actor Alicia Arkless Edie Actor Neil Hurst Benny Grew Actor Agatha Christie Writer Sarah Phelps Writer, Executive Producer Farah Abushwesha Producer Alex Gabassi Director Basi Akpabio Executive Producer James Prichard Executive Producer Damien Timmer Executive Producer Helen Ziegler Executive Producer Elizabeth Kilgarriff Executive Producer