reporter: anna s boyfriend, michael stodnick, had called police to say he was worried. he said he d gone to her house the night before to pick her up for a date, but she didn t answer the door. and now her colleagues were saying she hadn t shown up for work. frisco sgt. jay reim was one of the officers checking the home. no signs of any type of forced entry, anywhere. reporter: which means, also, you don t really have any excuse to go inside. correct. yeah, we didn t we didn t have any reason to go kick in somebody s door because there didn t seem to be anything out of the norm. reporter: the doors were locked, so sgt. reim asked some officers to find anna s 20-year-old son to help them get into the house. igor was by then a student living at the university where his mother worked. they show up with the son and the key and the alarm code. you gettin any kind of a read off the son? i didn t talk to the son. he sat in the car. reporter: and that s where igor waited while