From NetFlix:

Viggo Mortensen (in an Oscar-nominated role) reteams with director David Cronenberg in this intense thriller, starring as Nikolai Luzhin, a notorious London gangster. When Luzhin learns that a midwife named Anna (Naomi Watts) has discovered incriminating evidence against his “family,” he finds his normally steely resolve compromised. Vincent Cassel, Armin Mueller-Stahl and Sinéad Cusack co-star.

Naomi Watts is the midwife trying to find relatives for an infant orphan whose mother was a white slave of the Russian mob. Viggo Mortensen is a Russion mobster. Wonderful plot twists, excellent character development. It is also a redemption movie (often the case with violent movies). If you can stand the violence, this is Viggo Mortensen in one of his many amazing movies.