Kirsten Costas reminds her classmate Bernadette Protti of everything she wants, but could never have. The solution to the problem is to annihilate the source of the pain by stabbing Kirsten to death.
Meanwhile, Karen Severson and Laura Doyle were friends with Missy Avila since grade school, but as they grow older, Missy blossoms into a beautiful, charming young lady while Karen becomes a single mother, and the friendship dissolves. On the pretense of wanting to reconcile with Missy, Karen and Laura take her into the woods, beat her up, cut her hair and drown her in the lake. The crime is unsolved for years until an unexpected confession appears as if out of nowhere.
And Kelly Fuller (age 18) is enraged at 15-year-old Jessica Lang, who is her ex's new girlfriend. Jessica, who's more interested in her apprenticeship and family than any boy, pays for her friendliness with her life after Kelly decides to end the source of jealousy permanently by stabbing her almost 50 times.