England, December 1926. Although her personal life is in tatters, the famous writer Agatha Christie decides to leave everything behind to help unravel an unsolved murder committed on a train six years ago, unable to imagine the disproportionate consequences that such a selfless act will cause.
Ruth Bradley
as Agatha
Pippa Haywood
as Mabel
Dean Andrews
as Wade
Bebe Cave
as Daphne
Blake Harrison
as Travis
Tim McInnerny
as Randolph
Luke Pierre
as Zaki
Joshua Silver
as Franklin
Samantha Spiro
as Pamela
Ralph Ineson
as Detective Inspector Dicks
Michael McElhatton
as Sir Arthur Conan Doyle
Amelia Rose Dell
as Rosalind
