Social media can be a good thing when used properly, allowing people to catch up with friends and family who don't live nearby. Things can go wrong, though, when it's not used the right way. This series shows extreme examples of the negative outcomes that can result from social media usage. Episodes tell the stories of cases in which social media activity had dangerous -- sometimes deadly -- consequences. Cinematic re-enactments, witness testimony and expert interviews are used to present the tales that begin with something as simple as an online post or tweet and end with violence. Cases include an online feud between friends that results in a physical altercation and a seemingly innocent online connection to leads to a homicide.