Our protagonist opens the mirrored bathroom cabinet and grabs their toothbrush and toothpaste. Meanwhile, the music gradually swells, and we brace ourselves for the moment when the cabinet door closes to reveal something sinister in the mirror’s reflection. But nothing appears, and the music has built up for nothing. It doesn’t come because the director figures this formula has been overused, audiences won’t fall for it anymore. That’s why we actually experience that heart-stopping moment immediately after, when the camera pans to reveal a silhouette in the bathroom door’s glass panel. In the end, that moment happens, our bodies jolt from the scare, and then we surrender to that sweet…