Ask for an American movie about kidney cutting;

Beautiful bad things/dirty good things/angel night terrors/dirty beautiful things (2002)

Owen is an illegal immigrant in Nigeria. He used to be a surgeon in China, but he had to flee to England. In London, he drives a taxi during the day and works as a doorman in a shabby hotel at night. Owen accidentally bumped into a switch while repairing a pipe in the hotel toilet and found a fresh human heart, which seemed to have just been taken down. He thus exposed the conspiracy hidden behind this hotel. It turns out that the manager Snicky is engaged in the business of selling organs. When Snicky learned Owen's true identity, he threatened Owen to join their gang or hand him over to immigration.