The hunt is on to find the murderer of a wealthy glamorous heiress who is found dead in her London townhouse. Based on the short story by Agatha Christie.
Toby Jones
as John Mayhew
Andrea Riseborough
as Romaine Heilger
Kim Cattrall
as Emily French
David Haig
as Sir Charles Carter
Monica Dolan
as Janet McIntyre
Billy Howle
as Leonard Vole
Paul Ready
as Tripp
Tim McMullan
as Sir Hugo Meredith
Hayley Carmichael
as Alice Mayhew
Dorian Lough
as Detective Breem
Miranda Nolan
as Christine Moffat
Robert East
as Justice Greville Parris
