serial killer. that s how we know that we re dealing with a monster. ha mysterious murders. four of the victims were found in a burlap-type material. kaj larsen traces the trail of a serial killer still on the loose. this is long island, an hour s drive away from manhattan and it is known for beautiful million-dollar homes and secluded beaches. but that same isolation that people come here to seek, as of late, has been masking a darker eleme element. in december, police in long island make a shocking discovery. i don t think it is a coincidence that four bodies ended up in this area. for the past couple of years, women kept disappearing on long island. now, police think they may know why. we have a serial killer. we are dealing with a psychotic murderer. police still don t have answers, so we tried to get to the bottom of this eerie mystery. gus, man neighbors call the unofficial mayor of this community, shows me around. that s the house. that s where