Cat's Eye by Margaret AtwoodRead about the other books on the list.
Diabolical, irresistible Cordelia is one of Atwood's most indelible creations — the original (and worst) Mean Girl, who in the protagonist's flashbacks torments her to a near-lethal breaking point. No one else has ever conjured with such fury and precision the head games played among prepubescent girls, nor shown so well why these games' bewitched losers keep returning for more.
--Marshal Zeringue