is a blue collar beach town some call the poor man's paradise. but life was rich for these brothers and sisters in mastic, new york, filled with the love of a large tight-knit family. all that was taken away one warm evening when evil rolled in with the summer tide. their youngest sister was missing. >> we just want you to come home safely. >> and for better or worse, this family would go to extraordinary lengths to find her. >> we're going to scour those woods right now. >> we were our own investigators. >> here's me and five of the biggest guys you could probably imagine, knocking on your door. we're wanting answers. >> if you do not have a group, one right here. >> you ever seen so many people so involved in a case before, non-law enforcement? >> gratefully, no. missing person cases, especially