killing field? possibly. reporter: there are so many questions. we re interviewing agt of people. reporter: so far, no one s being calmed a suspect in the deaths of four women, all prostitutes, and four more still unidentified bodies found months later. it s not clear whether they re connected. we re talking about one killer or two killers? it s almost impossible to know that right now. we have bodies in various conditions, and states. reporter: there are possible links. some victims were wrapped in burlap, family was told. a law enforcement says some in black plastic, possibly a bag. police know the alleged killer used throw away cell phones to contact victim whose advertised on craigslist. including melissa. using melissa s cell phone after she disappeared made several taunting calls from the victim s sister from spots like times square where he couldn t be traced and allegedly admitted