Former FBI agent says hope remains in Nancy Guthrie investigation despite initial DNA findings

Will Cain expresses discouragement regarding initial DNA findings at Nancy Guthrie's home, suggesting the investigation might be at square one. Former FBI Special Agent Jonathan Gilliam offers a different perspective, emphasizing that investigators must assess all evidence carefully and that a perpetrator putting significant effort into a crime will inevitably leave a trail of evidence. Gilliam maintains hope that a crucial piece of evidence will eventually emerge, leading to a resolution.