In Un meurtre en sommeil, the French Télévisions film adaptation of Agatha Christie's Sleeping Murder, for the season 1 of the Les Petits Meurtres d'Agatha Christie TV series, Hélène Poliakov was the wife of Andrei Poliakov and the parallel of Helen Halliday from the original novel. Hélène Poliakov is portrayed by Géraldine Bastien.
Hélène was murdered fifteen years earlier.