shannon melendi. it was surreal! the time anne read those words, the famile was already in atlanta. feeling dazed and desperate. >> i was like, what's going on? >> what's going on? a question that would consume law enforcement and the melendi family for over a decade. >> what happened to shannon? police float the idea that she might have skipped town. >> coming up! >> i tell them, you do not know her! you do not know her! she would never run away. she never ran away from anything. >> and then, some of them shannon's acquaintances draw the interest of investigators. >> they would call me at home, they will call me at work early in the morning. >> when dateline continues! anketed her college campus. everywhere the melendi's looked, there was shannon's face. their daughters missing photos posters blanketed the campus. >> all that i could think of is, where is shannon? is she okay? >> as the investigation started, police told reporters that they were looking at two very different possibilities. >> either she left on her