Shyamalan famously "plays the audience like a piano" in this film. Instead of relying on global destruction or flashy CGI, Signs builds dread through domestic isolation. We see the world through the eyes of the Hess family on a remote Pennsylvania farm, where a baby monitor picking up static or a shadow on a roof feels more terrifying than a fleet of motherships. Key moments that still haunt viewers today include:

A grainy news broadcast from Brazil that provided one of the most effective jump-scares in modern cinema.

The simple, chilling sight of a grey finger sliding under a door.