In Fear(2013) -

Halfway through the film, the couple picks up a third party, Max, who claims to be under attack.

The director, Jeremy Lovering, famously withheld the script from the actors to create genuine paranoia and confusion. In Fear(2013)

In a high-tension psychological situation where you are already being stalked, picking up a stranger is almost always a fatal mistake. Halfway through the film, the couple picks up