The events surrounding a jack-in-the-box in The Strangers : Prey at Night , leave the audiences wondering if the events are real or just another nightmare .
As she gets up to fill a cup of water , she hears the sound of a jack-in-the-box , which Dollface previously used to lure her into a room , and hears a familiar banging on the door , leaving the audience to wonder if it 's real or possibly another nightmare.
The Strangers-COLON- Prey at Night