What if your worst enemy… was your daughter's new teacher?

Miss Smith is perfect. That's what my beautiful girl Jenna says, the morning I see the new teacher by the school gates, flashing her brilliant smile.

But I know Jenna's wrong. Because thirty years ago, Georgia Smith was my best friend… until one terrible day she wasn't. I'll never forget her face twisted with hate the last time I saw it.

I'm still shaking as the clock ticks past four thirty, and I begin to wonder why Jenna isn't home yet. And then I feel it in my gut:

Georgia is back, and my baby girl is gone.