philip prestwood: there's always that lingering doubt, are you going to solve this? [uplifting music] dance, dance, dance. dance, dance, dance. andrea canning: memories of a family man. she's a dancing girl. andrea canning: a doctor. missy bartlett: he is the most intelligent person that i know. andrea canning: a lover. woman: he would look at me and he would say, "how did i ever find you?" andrea canning: a good man. dallas sonnier: he was the ultimate support system for everybody in his life. andrea canning: finally savoring life's rewards. until he found himself in the crosshairs of someone's obsession. philip prestwood: there's tons of gossip and innuendo, especially in a small town in west texas. i mean, this story on its own is so sensational. andrea canning: july 11, 2012. a warm summer afternoon in lubbock, texas. landscapers becky sherbet and nathan gilmore were getting down to work outside this spacious home. the owner, dr. joe sonnier, was the chief pathologist as they walked around the yard, someone pulled up to the house. it was a girl from dr. sonnier's