Twisted Ending Explained [SPOILER!]

SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!

SPOILERS AHEAD

Twisted Plot Summary and Synopsis

A young woman seeks independence from her protective mother, only to be questioning her own sanity when newfound friends die, and her mother suggests Hannah is the cause of their death.

Source: Wikipedia (CC BY-SA 3.0).