It is clear that the published screenplay of Fantastic Beasts and Where To Find Them was adapted to match the final film. However, there is a small difference on the screenplay.
There is a little detail that doesn’t appear at the movie – we don’t know if it was recorded and then edited out, or it was never part of the film.
When Graves finds Mary Lou body, there is supposed to be another body: Chastity Barebone, the other girl who was adopted by Mary Lou.
The place is destroyed – moonlight filters through gaps in the roof, and Chastity lies dead amid debris from the attack. Graves slowly enters the church, wand still drawn. Eerie sobbing can be heard from somewhere in the building. Mary Lou’s body lies on the floor in front of him, the marks on her face visible in the moonlight. Graves considers the corpse: A realization dawning on his face – no horror, merely wariness and intense interest.
This is not shown at the movie – and it is a new death at the hands of the Obscurus (Credence).