Degrassi: The Next Generation: Season 8, Episode 12

8 - 12:

Pushed to the edge by Holly J, Alli begins posting nasty things about her on the "anti-Grapevine" blog, the underground school on-line site. When nasty turns to hateful and then to threatening, Alli is expelled from school and questioned by the police. Has Holly J met her match in the mean department? Mr. Stone, always "Daddy of the Year", pressures Peter into helping out with his half-sister and Peter reluctantly agrees. But when his Angel starts to interfere with Peter's fun, Peter decides responsibility for someone else's child shouldn't fall on him (an opinion that hits his girlfriend, Mia, hard). Will Peter turn his back on his baby sister and let her be raised without a good male role model or will he decide to become a stellar big brother?