Under the Sand

When her husband goes missing at the beach, a female professor begins to mentally disintegrate as her denial of his disappearance becomes delusional.

Under the Sand is a 2001 drama mystery movie directed by François Ozon, starring Bruno Cremer, Jacques Nolot, Charlotte Rampling. It holds an IMDb rating of 7.0/10 from 10,743 votes and runs 1h 32m.