Lisa Dorrian was a bright, beloved young woman spending her early 20s in her hometown of Bangor, Northern Ireland. However, in early 2005, her family noticed a shift in their daughter once she began hanging out with a new friend group, and her weekend activities changed from light partying to heavy drug use. Following a strange party in a caravan park, Lisa reportedly ran off into the night, never to be seen again. Now, over 20 years later, the theories range from drug debts to paramilitary organizations, and the question remains: what happened to Lisa Dorrian?