Ernst may be falling apart, but Hawke’s measured, anguished acting holds it together, and it has to, because Schrader, whose age and semi-exile from the studios have combined into a true give-no-fucks mandate, goes hard in the home stretch. One of the really wondrous things here is the way that the basic realism of Schrader’s style . . . gradually starts warping in sync with its protagonist’s consciousness.