When new folks move next door, she finds new purpose. Because they're loud, combative and secretive, she's intrigued. Holding binoculars up to her bedroom window, she sees what could be the hint of a crime. He even uses a Bernard Herrmann-like score that swells even when the action doesn't. Pfeiffer completely alone at home.
Doors open on their own, picture frames fall.
The two try to conduct a seance, but Pfeiffer finds more success with a little internet research. She turns up a missing person report and begins to put 2 and 9 together. The clues don't add up. But that doesn't stop Zemeckis from throwing them like so many pebbles in the water. He lets Pfeiffer worry about everything.