On October 8, 1976, during a group field trip involving thirty-three students from Bearden High School at Clingmans Dome in the Great Smoky Mountains National Park, Trenny Lynn Gibson mysteriously vanished and was never found. This case has presented significant personal challenges for me for a number of reasons. Having been a member of the law enforcement community for thirty-nine years, I have never encountered such a serious miscarriage of justice among the involved law enforcement agencies. Through correspondence with Hope Gibson, the analysis of physical evidence, non- physical evidence, statement analysis, and a review of previously provided statements by Robert Gibson Jr., I was able to resolve the case within one week by posing several critical questions that should have been considered nearly fifty years ago. The physical evidence had been conspicuously present for decades, yet law enforcement failed to investigate the criminal implications of the disappearance. This oversight was largely attributable to the fact that the father of the primary person of interest was a federal official who thwarted the FBI’s inquiry, culminating in the tragic murder of a deceased sixteen-year-old girl.