Rule-Based Threat
Giving the threat a short list of clear rules early in the film. You then use those rules to predict danger, which keeps you checking every scene alongside the characters.
How this film uses it
Martin explains what will happen to the family in clear stages: they will lose the use of their legs, stop eating, bleed from the eyes and die. You then watch each symptom arrive on schedule. The rules turn the film into a countdown that you track alongside the characters.
Where to see it
The hospital reveal: Martin tells Steven that one family member must die, and that Bob's paralysis is the first step.

















