Sheriff Chris Nanos keeps saying the Nancy Guthrie case is "getting closer." But closer to what — and from which direction? Investigators are sitting on two enormous piles of evidence. Unknown DNA from a contributor recovered from inside Nancy's home. And thousands of hours of surveillance video from intersection cameras, doorbell systems, and home security feeds across Tucson. Either one could crack this case. But the investigation meant to use that evidence has been collapsing from the inside since the beginning. The crime scene was released too early. A thermal imaging plane sat grounded because its pilot had been reassigned over a personal grudge. The lead sergeant on the initial response had reportedly never worked a homicide. Experienced detectives had already been sidelined. The doorbell camera footage from the night Nancy vanished? The sheriff's department declared it unrecoverable. The FBI produced it roughly ten days later. Nancy Guthrie was 84 years old when she was allegedly taken from her Tucson-area home in the middle of the night. Blood confirmed as hers was found on the porch. A masked, armed figure was captured on the recovered doorbell footage. Her pacemaker disconnected in the early morning hours. She left behind her phone, wallet, and daily medication. No arrest. No named suspect. Retired FBI Special Agent Jennifer Coffindaffer walks through where the break is most likely to come from and why. She tackles the DNA route — whether the unknown contributor sample has been uploaded to CODIS, what happens if the person isn't in the system, and why forensic genealogy becomes the backup path. She addresses the lab routing controversy — why this DNA went to multiple federal and state labs instead of straight to Quantico. Then the digital mountain. Cataloging video, building vehicle timelines, tracking the white truck and red sedan reported near the property, mapping cellphone activity. Coffindaffer explains how that work plays out inside a multi-agency investigation and why she believes this route may name a suspect first. She also offers an honest read on whether the sheriff's confidence is grounded in real movement — or the kind of language that gets used when nothing concrete is ready. Join Our SubStack For AD-FREE ADVANCE EPISODES & EXTRAS!: https://hiddenkillers.substack.com/ Want to comment and watch this podcast as a video? Check out our YouTube Channel. https://www.youtube.com/channel/UC8-vxmbhTxxG10sO1izODJg?sub_confirmation=1 Instagram https://www.instagram.com/hiddenkillerspod/ Facebook https://www.facebook.com/hiddenkillerspod/ Tik-Tok https://www.tiktok.com/@hiddenkillerspod X Twitter https://x.com/TrueCrimePod This publication contains commentary and opinion based on publicly available information. All individuals are presumed innocent until proven guilty in a court of law. Nothing published here should be taken as a statement of fact, health or legal advice. #NancyGuthrie #SavannahGuthrie #DNAEvidence #CODIS #FBI #ChrisNanos #JenniferCoffindaffer #HiddenKillers #TrueCrime #TucsonArizona