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
Pippa Haywood
Dean Andrews
Bebe Cave
Blake Harrison
Tim McInnerny
Luke Pierre
Joshua Silver
Samantha Spiro
Ralph Ineson
Michael McElhatton
Amelia Rose Dell
Richard Doubleday
Derek Halligan
Stacha Hicks
Brian McCardie
Clare McMahon
Liam McMahon
Seamus O'Hara