Grainy B&W night vision nanny cam, VHS noise, 15fps. Fixed high angle in a nursery. The door bursts open. A frantic priest in a black cassock rushes in, dumps a baby into the crib, and instantly throws a bag of salt across the threshold, creating a bright white line. At that exact second, a terrifying, pale, contorted creature crawling on all fours lunges from the dark hallway. The monster violently slams into the salt line as if hitting an invisible wall, screeching in pain. The priest screams, thrusting a crucifix forward. The creature recoils in terror, scrambles backward clumsily, and frantically scuttles back into the darkness. Fast-paced, intense, practical effects style.