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, Sacha Poliakov is a young woman who has escaped from a mental hospital. She rents a large derelict house outside Lille. Sacha is the parallel of Gwenda Reed in the original novel.
She has flashbacks of seeing a woman being murdered.