Final Girl: The Falconwood Files (Series 3)

Peculiar things are happening in the small town of Falconwood. Government experiments and supernatural occurrences are happening with regularity. You and your friends have begun recording the events in the Falconwood Files (a collective journal your group is keeping). None of the events have involved you or your friends...  until now.

How do you stop a monstrosity from a parallel mirror-dimension? Friends, strangers, and everyone in between are disappearing... and they'll never be  heard from again unless you willingly enter the  mirror dimension to save them.