Arguably one of the scariest aspects of the servants of Sauron is their ability to locate and pursue the One Ring. In the first film, the Fellowship of the Ring, there is a lot of fear and tension surrounding the 9 Ringwraiths and their black horses hunting the hobbits through the woods. These terrifying creatures seem to be able to sense the dark object, and are called to it, which means that it doesn’t matter where Frodo runs or tries to hide, they will always find him.