A Fatal Inversion.

Adaptation of the Barbara Vine (aka Ruth Rendell) novel. After Adam inherits a country house from his great uncle, he and his friend Rufus decide to spend the summer there instead of abroad. An odd assortment of 'house guests' turns up through different means and it's an uneasy mix at best. A decade afterwards, the bodies of a young woman and an infant are discovered in the woods behind the house. As the police investigate, they naturally look to Adam as former owner of the house, and what happened all those years before starts to catch up with him.