Hello!

A man with a manic expression peers through a cracked door, his face contorted in a wide, toothy grin, then shifts to a look of intense, almost pained excitement. The scene cuts to a woman in a robe, screaming in terror while clutching a large kitchen knife, her face twisted in fear. The man's face reappears, still grinning wildly, as the loop repeats. The setting is a narrow, white-walled hallway or corridor.