>> was this the break they were looking for? >> the tip led to real flesh and blood. in fact, to a quite literal snake in the grass. a curious incident from teresa's past. could it shed light on the crime? coming up -- >> i looked at her, and i said you need to stay away from that woman. she is no friend of yours. >> when "dateline" continues. i love to eat. i love hanging out with my friends. i have a great fit with my dentures. i love kiwis. i've always had that issue with the seeds getting under my denture. super poligrip free. it creates a seal of the dentures in my mouth. even well fitting dentures let in food particles just a few dabs of super poligrip free is clinically proven to seal out more food particles so you're more comfortable