With Great Joy (2001)

By accident, Luc discovers the whereabouts of his brother Ad, who mysteriously disappeared fifteen years before. As it turns out, he is living with Els, secluded from the rest of the world, on a farm. Luc decides to stay a few days, even though he and his wife Mieke are not welcome at first. After a while, Mieke heads home. Also, Luc hears strange sounds coming from a barn at the farm. He decides to investigate the matter. He discovers a secret that Ad and Els have been hiding for years.

Unfortunately the movie With Great Joy is not yet available on HBO Max.