Agatha Christie

Olivia Williams

Older Agatha Christie

Anna Massey

Archie Christie

Raymond Coulthard

Psychatrist

Stephen Boxer

Hercule Poirot

Anthony O'Donnell

Kenyon

Mark Gatiss

Gunman

Richard Leaf

Young Agatha Christie

Bonnie Wright

Agatha Christie's Mother

Celia Montague

Reggie

James Tucker

Self (archive footage)

Agatha Christie

Carlo Fisher

Vicki Pepperdine

Max Mallowan

Bertie Carvel

Soldier

Edmund Kingsley

Band Member

Gregory Finnegan

Docteur Edward Armstrong

Toby Stephens