Helen Baxendale

as Agatha Christie

Blake Harrison

as Travis Pickford

Jacqueline Boatswain

as Audrey Evans

Gina Bramhill

as Grace Nicory

Daniel Caltagirone

as Eli Schneider

Thomas Chaanhing

as Frankie Lei

Scott Chambers

as Clarence Allen

Vanessa Grasse

as Nell Lewis

Jodie McNee

as PC O'Hanauer

Elizabeth Tan

as Jun Yuhuan

Morgan Watkins

as Rocco Vella

Alistair Petrie

as Sir Malcolm Campbell