Explaining the "secret of Esrever" ***SPOILERS***
There’s a secret message in the movie that you can discover in: the FIRE, the GRASS, the factory WINDOW, the GRAVESTONE and the RUG, which all-together spell: "Seek me no further or...". This combined with reversing Tristen’s backward words in the last act reveal the so-called 'secret of ESREVER' (which is 'reverse' spelled backwards): "Seek me no further or... the children will again walk free," meaning: the Blair witch would loose the spirits of the murdered children to torment the invaders of her domain, which can be observed in the little ghost girl Eileen Treacle and the sequence with the ghost children in the middle of the road.
My 150 (or so) favorite movies:
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