he says, "this girlfriend of mine, kerri carr, we've had problems for a long time. me'cause she don't like me. she wants to see me in trouble." >> the detectives brought kerri in for another chat. >> after a lengthy discussion, she ultimately said, yes, what her ex-boyfriend told us, that she was trying to get back at him and try to get him in trouble, almost like i got you kinda thing. >> you know, it's frustrating work that you do. >> yeah, this was -- i mean, this took days. you know, it took us away from the -- what we're thinkin'we're investigating, trying to locate chelsea and find out what happened to her with this information that someone comes in and brings to us. >> so they arrested kerri, too, for lying to the police and they went back to square one. while chelsea's family waited for something anything good. >> still very hopeful that she is somewhere alive and well. >> and the searchers slogged. >> it's pretty marshy back there. it's a lot of mud. so it's pretty tough to get through. a lot of downed timbers. so it's challenging. >> cops deputies volunteer