There is something darkly beautiful about horror that commits to its metaphor so completely that it becomes absurd. Together, the debut feature film from Australian writer/director Michael Shanks, is nothing if not fully committed. What starts as a sharply observed domestic drama about a couple struggling with their future soon melts, drips, and mutates into a gnarly, inventive, and unexpectedly moving tale about toxic love, the follies of codependency, and the slippery definition of self when living in someone else’s orbit. In its best moments, it feels like a...