Nightcap

Nightcap (Merci pour le chocolat, 2000) is a psychological thriller from Claude Chabrol that you can watch online on iFILM. Isabelle Huppert plays Mika, the heiress to a Swiss chocolate fortune who has just remarried André Polonski, a famous concert pianist.

On the surface their home is flawless: the grand piano, the tidy routine, the evening mug of hot chocolate. André's first wife died in a car crash, leaving him to raise their son Guillaume. Then Jeanne turns up at the door — a young conservatory student who has discovered that, years ago, she was nearly swapped for that very boy at the hospital. A simple, curious visit sets off a quiet chain reaction, and beneath Mika's perfect manners something cool and hard begins to show. Jacques Dutronc plays the pianist, Anna Mouglalis the persistent guest.

Adapting a Charlotte Armstrong novel, Chabrol skips the chases and films the poison of politeness instead — the way a smile can unsettle more than a scream. Huppert underplays it all, which only makes the dread worse. This is slow, creeping cinema for viewers who like tension built from small details. Stream Nightcap (2000) online on iFILM.