always, find brooke, help us to find brooke. i guess that was a selfish prayer, to help whoever had done this make a mistake and i felt like, they made a mistake. >> but if this mistake could help find brooke, investigators first had to find out all they could about this latest possible suspect. and specifically they wanted to know more about that suspect's ties to oregon. detectives quickly determined that joel courtney grew up in beaverton, a portland suburb about 75 miles from where brooke disappeared, but that had been 20 years before. police also knew he had lived in several different states. the question was, had courtney been anywhere near corvallis on the day of the kidnapping? there was one person who could answer that question and many more. her name? dina mcbride, joel courtney's older sister. she lived in portland.