>> she had had a wordy conversation or confrontation with two young males who came through the drive-through. we're thinking they could be two potential suspects. >> normally there would be video to identify these men, but not this time. >> big disappointment. the restaurant didn't have any kind of surveillance video. >> this also meant there was no surveillance video of the parking lot and none of the customers or tara's co-workers saw anything suspicious. >> they didn't really pay attention who she left with, or what transpired outside in the parking lot. >> this left tara's family and police without answers. >> we knew absolutely nothing. we had nothing. the case was completely clueless from the start. diabetes affects millions of us. and for many, it's a struggle to keep your a1c down. so imagine -- what if there was a new class of medicine