Nightcap (2000)

Mika, heiress to a Swiss chocolate company, is married to celebrated pianist André and stepmother to his son, Guillaume, whose mother died in a car wreck on his tenth birthday. Their lives are interrupted by the unexpected arrival of Jeanne, a young woman who has learned she was almost switched with Guillaume at birth.

Genres: Thriller, Drama, Mystery

What to watch after Nightcap

• Hell (1994) — Same subject: jealousy
• Nathalie... (2003)
• 8 Women (2002)
• Code Unknown (2000)
• The Unfaithful Wife (1969) — Same feel: tense, mysterious
• Brides (2004) — Claude Chabrol directed both