How I Killed My Father (2001)
Jean-Luc is an established gerontologist who can do no wrong; he runs a private clinic specialising in anti-ageing treatments. Honoured for his work in this field, he throws a garden party at his home. It is during this social event that his father suddenly reappears, back after a long exile. A physician, he had left decades earlier without any apparent reason to practice in Africa. He moves into his son's home for several days, phlegmatically observing everything with an enigmatic smile.