`Unfriending' on social media leads a Tennessee couple to their deaths.

When social media posts heighten jealousy within a teenage love triangle, the teens learn that posts are not easily forgiven.

Social media posts cause dangerous actions when Sarah Ludemann finds out she has been sharing her boyfriend with another girl.

When a girl disappears a week after accepting a suspicious friend request, detectives uncover a case of mistaken identity.

When a high school football star and his friend are attacked, social media posts imply that one of the victims is leading a double life.

A young woman who shares details about her troubled relationship on social media is found brutally murdered.