It can't decide if it's a paranoid thriller or an exploration of grief, trauma, and addiction! Not that it can't be both, but you can tell there's two people behind the camera: one of them has an artistic point of view, while the other one knows how to craft an entertaining movie. Either one would be fine on its own, but mashed together like this it's just not satisfying.
There's a really interesting scene about an hour and 10 minutes in where the Leung, March, and her family meet and go to dinner. They all treat him like he's less than nothing, even though he's paying for everything. The mother breaks down crying at a dance while her oldest son makes out with a floozy and her daughter and younger son dance rather provocatively. Later, Leung's character essentially rapes March's who then makes him pay her, but in a…