Only God Forgives 2013

Julian, an Englishman living in Bangkok, is a respected figure in the criminal underworld. He and his brother Billy run a Thai boxing club which is in fact a front for smuggling drugs to London. When Billy is murdered, their mother Jenna arrives from London to bring back the body. Jenna is herself the head of a powerful criminal organisation and is used to getting exactly what she wants. She sets out to settle the score along a bloody path of rage, betrayal, and vengeance, hurtling toward an ultimate confrontation and the possibility of redemption.