McKendry: So, jump scares are based on kind of a theory of ... something might happen to when it actually happened. More from Movies Insider ...

Mid-way through the movie, the central family's neighbour Liam (Matthew Sato) is in their house when he's suddenly tormented ...

“Modern horror movies have on average about ten jump scares, so that's about one per ten minutes,” Clasen says. “In contrast ...