The Unexplained Universe on Instagram: "In 2009, a male nurse and his colleague were working a night shift at the Guadalajara Civil Hospital in Mexico when they began recording each other. The routine filming captured a terrifying, unexpected event. As the camera was rolling, a dark, shadowy figure suddenly passed by a door visible in the background. Shocked by the sight, the two nurses immediately rushed to check the room the figure seemed to have passed into. To their surprise, the room, which