Epistemic Horror
Making the fear come from being unable to know what is real. The character can't trust their own records, memories or senses, and that is scarier than any physical threat.
How this film uses it
Iris was hit on the head before boarding, and a doctor on the train says she's imagining things. Then another woman shows up wearing Miss Froy's clothes and claims to be the lady she means. Even Iris starts to doubt herself, and you start to doubt with her.
Where to see it
Madame Kummer appears. A woman dressed exactly like Miss Froy sits in her seat and says she was the one helping Iris all along.

















