The newly released surveillance video from Nancy Guthrie’s front door offers a new trove of information to investigators — including some small details that could help crack the case.
The person is seen in the video bent over, walking across square floor tiles to the door. These tiles can help the FBI determine the subject’s exact shoe size, said Wallace Zeins, a former NYPD hostage negotiator and homicide detective.
“They will take his footprint, his footstep, and they’ll be able to measure the length and width of his foot compared to the length and width of the tile, because all the tiles are the same,” Zeins said.
Next, investigators are likely trying to figure out what devices the person had when they got to the house.
Casey Jordan, a criminologist and behavioral analyst, said it appears that there could be a cellphone in the person’s pocket, as seen in the video.
Even if that phone was off, investigators will be able to use the video’s timestamp to see what devices were in the area before and after that time.
“They can zero in on all of the devices pinging off the cell tower and try to narrow it down to cell phone numbers that may not belong in the area, or if they do belong in the area who do they belong to? Do they belong to somebody who might fit this description?” Jordan said.
“You can be sure they’re working on that right now,” she said.
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