i think you need to sit down, katelynn." i was like, "what's going on?"nd all i remember is just dropping to the ground. >> reporter: rachel's friend shannon couldn't believe what she read online. >> i found out through facebook. i was scrolling and saw someone post something, "r.i.p. rachel." >> reporter: all right. >> and i was like, "what the hell is going on?" so then i called her younger brother, and he said somebody came into her house and murdered her. and i said, "what do you mean somebody came into her house and murdered her?" >> reporter: coming up -- itivit, 3 days is really fast. sensodyne rapid relief is a game changer. it's going to let the dentist offer their patient sensitivity relief in 3 days. say over the course of a weekend you're going to start feeling significant results. check your free credit scores at creditkarma. here's to progress. what sore muscles? what with advpounding head? .. advil is... relief that's fast. strength that lasts. you'll ask... what pain? with advil. >> stop right there. turn around. put your hands on top of y