It’s been a year since Kyron Horman went missing from Skyline School. The Multnomah County Sheriff's Office is changing the investigation so that it has more of a forensic approach; reviewing evidence, documents and interviews.  Former FBI Agent Brad Garrett says finding evidence could come down to a mistaken comment.  Garrett says this is typically the next step in this type of investigation.  Detectives will review the 68 binders full of information and the 3500 interviews conducted over the last year.