and then, you re, what, goin back to school and yep. exactly. reporter: still it was hard for the family to put trish s death behind them. and something else was troubling. emily and sara had a fuzzy recollection that trish wasn t the first person in the family commune to die. they d recently met a teenager who d also once been on the fringes of the commune. and he told a story with painful echoes. coming up, a tale of tragedy and mystery. i knew something wasn t right and he told me, your mom and sister have been missing. two members of the commune vanish in thin air. when dateline continues. and the 12-hour pain relieving strength of aleve. so.magic mornings happen. there s a better choice. aleve pm.