Contemporary Iranians sometimes encounter jinn through sensations that range from the subtle to the traumatic. These include a furtive shadow in one's field of vision, the dilation of the pupils, feelings of heaviness, a fleeting whisper in the ear, bruises on the body, and even sexual violation. As real as these sensations can feel, those who encounter jinn also regularly doubt them, sometimes going as far as questioning their own sanity. That is, they recognize that their encounters with jinn are quite different from the more straightforward, taken-for-granted sensations of everyday life: the sight of a tree, the texture of bread, the voice of a stranger at the grocery store, and so on. It is not just that the sensations associated with jinn are extraordinary (in the way that, say, the sensation of tremors from an earthquake are extraordinary), but also that these sensations are inextricably entangled with questions about the very existence of jinn, and therefore also with questions of belief and doubt. In my paper, I examine concrete examples of jinn encounters in Iran to ask how we might think seriously about the materiality and sensousness of jinn experience while avoiding the pitfalls of a naive realism too often embraced by proponents of the ontological turn. One way forward is to begin with the uncanniness of jinn sensations as an opening onto the terror of coming to grips with what Eugene Thacker calls the "world-without-us," a world beyond ordinary taken-for-granted experience that neither scientific nor any other kind of understanding can grasp, a world thus approached best, Thacker argues, through horror.