En toute innocence

When Catherine Duchêne is caught with her illicit lover Didier by her father-in-law Paul, the concerned father leaves to tell his son Thomas about the incident. Paul is injured in an auto accident and returns home in a wheelchair unable to speak, causing Catherine's guilt to weigh heavily on her as she hopes to never let Thomas know she was unfaithful. As Catherine seeks a way to eliminate Paul, the psychological thriller unfolds with Paul feigning a loss of voice, outsmarting his daughter-in-law at every turn, and only sharing his true intentions with a few close confidants, including Clémence, the family's elderly housekeeper, and Serge, Paul's doctor and friend.