Dr. Phil tackles one of the most dangerous trends affecting young adults today -- cyberbullying. Kalista, 20, claims she has been virtually assaulted for almost two years by Taylor, 20, a girl who Kalista says loves to attack people when they’re at their lowest point. Kalista says Taylor has posted photos of her online and written lies that she does drugs, is a stripper and a prostitute. Kalista says she’s not the only victim of Taylor’s alleged bullying -- Shelby, 22, and Shayna, 21, say they also have been targeted -- and she’s worried someone may be pushed too far. How do they say Taylor’s alleged actions have affected them? Taylor admits she has made nasty comments -- why does she say she was only defending herself? Dr. Phil brings all parties together to try to end the hostility. Are these young women ready to unplug and end the animosity? Plus, hear from the mother of a 12-year-old girl who tragically ended her own life after being cyberbullied. Will her story make an impact?