Olivia Williams

~ as ~

Agatha Christie

Anna Massey

~ as ~

Old Agatha Christie

Raymond Coulthard

~ as ~

Archie Christie

Stephen Boxer

~ as ~

Psychatrist

Anthony O'Donnell

~ as ~

Hercule Poirot

Anthony O'Donnell

~ as ~

Kenward

Mark Gatiss

~ as ~

Kenyon

Richard Leaf

~ as ~

Gunman

Bonnie Wright

~ as ~

Young Agatha Christie

Celia Montague

~ as ~

Agatha Christie's Mother