One Night (French: 38 témoins), also known as 38 Witnesses, is a 2012 Belgian-French drama film directed by Lucas Belvaux.

[3] It was written by Belvaux based on Didier Decoin's novel Est-ce ainsi que les femmes meurent?.

[4] When Louise Morvand returns from a business trip to China she discovers that a crime has been committed in her hometown.

Upon initial police investigation it appears that there were no witnesses to the crime,[5] and Louise's neighbours seem to be strangely uninterested in finding the murderer.

Haunted by a feeling of guilt, Pierre goes to the police station and admits that he heard screams and saw the attacked woman from the window on the night of the murder.