Gilles Kneusé

The director

Peter Hudson

Dr. Sheppard

Gilles Gaston-Dreyfus

Hercule Poirot

Célia Catalifo

Flora Ackroyd

Vincent Deslandres

Ghislain de Fonclare

François Lequesne

Carole Rochelle

Mrs. Ferrars

Héloïse Rauth

Caroline Sheppard

Benjamin Tholozan

Julien Urrutia

Pierre Bayard

Self - Professor of literature

Denis Bertrand

Self - Semiotician

Neel Burton

Self - Psychiatrist

Georges Moréas

Self - Former chief of police

Malcolm Neesam

Self - Historian

Andrew Norman

Self - Writer

François Rivière

Self - Writer

Agatha Christie

Self (archive footage)

Joanna Grudzinska

Ursula Bourne

Gérard Dessalles

(voice)

Enrico Di Giovanni

(voice)

Jean-Gabriel Nordmann

(voice)