week or two ago. >> reporter: the thief in that earlier burglary, it appeared, used shauna's bathroom to take a shower and left with several pairs of shauna's panties and some jewelry. he left behind a pair of boxer shorts, size small. back then shauna immediately suspected some neighborhood teens, said george. >> so she had discussed it with several people, including george, and decided that it may be that she left something unlocked. and it could be maybe some kids that live in the neighborhood. >> reporter: so, is that who killed her? looking around the crime scene, the detectives realized that shauna's killer or killers had been into her booze, and taken not just her purse but, like in that earlier burglary, her underwear. so they set about checking out every one of the neighborhood boys, and they had solid alibis,