Mirror Mirror by Marina Sargenti

5.10

Shy teenager Megan moves to a new town with her widowed mother and quickly becomes the most unpopular girl in high school. But when she starts to communicate with a mysterious mirror, her tormentors begin to meet with a horrifying series of 'accidents'. Is the mirror a reflection of Megan's own inner demons... or has she unwittingly opened the doorway of the damned?