Possessor opens with a glossy murder sequence that seems to be the jumping-off point for a glossy techno-thriller. The killer is revealed to be an assassin who operates by taking over the minds of working-class stiffs who are in a position to be close enough to various VIPs to carry out quick hits. Each unlucky prole chews on a bullet as the possessor controlling their actions blinks out of the equation and returns to her own body. Having established the kind of killer premise that an enterprising show-runner could use as fodder for two, maybe three seasons of a Netflix original, the film gets restless and almost immediately veers into uncharted territory, as the apparently imperturbable killer Tasya Vos (tough, wiry and tender Andrea Riseborough) reveals herself to be distracted by concerns over her disintegrated family life-and perhaps unfit to fight back when one of her meat puppets, a rank-and-file big-tech employee named Colin (Christopher Abbott), manages to rebel against her control.