By chance, while pursuing this hunch, he discovers that the actress Hélène Lanson was the passenger in a car that was damaged on the day of his son's death. Adopting a pseudonym, he seduces her and discovers that the driver was her brother-in-law Paul Decourt.
By chance, while investigating this hunch, he finds out that actress Hélène Lanson was a passenger in a car that suffered damage on the day of his son's death. Under an assumed name, he seduces her and discovers that the driver was her brother-in-law Paul Decourt.