Episode 3 S01 E03

Jack Whitehall (as Paul Pennyfeather) Eva Longoria (as Margot Beste-Chetwynde) David Suchet (as Dr. Fagan) Douglas Hodge (as Grimes) Stephen Graham (as Philbrick) Chiké Okonkwo (as Chokey) Steve Speirs (as Davis) Anatole Taubman (as Otto) Gemma Whelan (as Diane Fagan) Matthew Beard (as Arthur Potts) Vincent Franklin (as Prendergast) Oscar Kennedy (as Peter Beste-Chetwynde)