Merci pour le Chocolat, also known as Nightcap,[2] is a 2000 French psychological thriller film directed by Claude Chabrol and starring Isabelle Huppert and Jacques Dutronc.

Variety called it "a treat, a delicious blend of perversity, playfulness and deadly passion concealed beneath the tranquil, moneyed surface of the Swiss bourgeoisie", and said it is "fit to stand alongside his [Chabrol's] late-'60s career highs.

"[2] Roger Ebert said that the film's appeal "is not in the somewhat creaky old poisoning plot, not in the hints of suppressed family secrets, not in the suspense about what will happen next" but in Huppert's enigmatic character which is "maddening, perverse and seductive.

"[4] The Guardian called it "an intriguing little film, playfully aware of its own contrivances" but "stylish and intelligent - maintaining just enough of a frisson to keep you on the edge of your seat.

"[6] Time Out called it "a dark, velvety film which masks the rough with the smooth and coats a bitter pill in a veneer of decadent French polish.