. >> now as she prepared to defend ethan, david aler was feeling much better.rimes chief accuser, it appeared, was a practiced con artist. would any jury believe her? ethan might be naive, but his story, after all, had never changed. >> they had gone to dinner, he, kate, and heather. after they went to dinner, he dropped kate back off at her parents' home here in downtown charleston and spoke with her a couple times via text message that night. and he didn't talk to her again after that. >> so it was all on heather. and with her as ethan's chief accuser, how could any jury convict him? but just days before the trial was to start, solicitor scarlett wilson finally uncovered something the case lacked. a clear motive. she found it, she said, in letters kate wrote to her friend before she disappeared. >> she's talking about how someone has tried to extend her credit limit or has tried to assume her identity and mess with her money in her bank. and she was livid. and i think kate was threatening to get her father involved. that was a new dimension. >> sure. >> for h