Mystery Woman: At First Sight(2006)

Overview:

After dating hot doctor Ben, cued by Cassie, mystery woman sets out to discover in a tiny town her birth mother through Victor Short, the diner-managing adopted son the the doc who arranged many more adoptions. She finds her and her husband, Mark McPhillips, murder suspects. Back home, the arrival of an undercover secret agent requires unorthodox help from his retired colleague Philby.