The hook mine is a gadget available to Billie Lurk in Dishonored: Death of the Outsider. Like other mines, it can be attached to any surface or enemy. When an enemy draws close, it launches a hooked metal ball that will stick to them. The ball is then magnetically pulled back towards the mine, bringing with it anyone that was hooked.
While the hook mine is not inherently lethal, it is possible for an individual to be pulled by two hook mines simultaneously, eventually ripping them apart.