After the death of their father, estranged sisters Lizzie and Jo are back together under their mother's roof on the night of the winter formal. Jo chooses to go out with her friends while Lizzie isolates herself, unable to think about fun at a time like this. Will the sisters ever see eye to eye?

What did Lizzie see in the mirror? Not even she understands, and she certainly can't explain to her distracted mother or self-absorbed sister. As Jo and the other party guests return home, Lizzie retreats to her room where something in the mirror follows her.

Looks can be deceiving. Lizzie keeps seeing her dead father in the mirror, but can she trust her own eyes? There has to be something more there.

There's something different about Lizzie...according to Jane's boorish date. What's gotten into everyone tonight?

The girl in the mirror has tasted fresh blood and wants more...Can Lizzie find any cracks in Mira's plan?

The real Lizzie still shines through behind the mirror as she tries to get a message to the survivors. Will she be able to reach them before the body count climbs?

Mira can split her head open and eat people's faces off, but she can't chase everyone at once. Will separating save the party?

Mira taunts Jo and Carrie, but the family holds onto the hope that they can break through to the real Lizzie. Will destroying the mirror be enough to save her?

Mira needs a host to survive outside her world, but Jo has a plan to send her back. Can the sisters conquer this demon together?