how the killer was able to get away with it for so long. >> state police. >> there's somebody after me. >> what's your name? >> shannon gilbert. >> where are you? >> i'm on long island. >> and what's wrong? >> these people are -- me. >> may 1st of 2010. >> she showed up at my door. she was banging on the door, screaming help me, help me. >> shannon gilbert, a 23-year-old woman working as an escort, has been brought to a house party near gilgo beach. on a picturesque barrier island.