A new and troubling angle has emerged in the investigation into Nancy Guthrie’s disappearance, as detectives turn their attention to the possibility of an “insider” who may have had legitimate access to her home.

Law enforcement officials are now reviewing records of former employees, domestic staff, and outside contractors who entered the property within the past six months. The move comes amid growing suspicion that whoever orchestrated the crime may have been familiar with the layout of the residence, security systems, and the family’s daily routines.

Sources close to the investigation say a recently dismissed maintenance worker has drawn particular scrutiny. While authorities have not publicly named any suspects, they confirmed that individuals with prior access to the home are being carefully examined.

Investigators are reportedly cross-referencing work schedules, entry logs, and digital communications in an effort to determine whether someone exploited their trusted position to gather information—or worse, plan the crime from within.

A source familiar with the case hinted that security system data from previous service visits may reveal whether someone tested vulnerabilities before the night Nancy vanished—an angle detectives are now urgently pursuing.