Erin McLaughlin

The Columbus Police Department made this public appeal on social media for any tips about suspicious individuals in the neighborhood that night and asked residents to submit security camera footage around the time of the shootings.

Now, last week,

We don't know yet how they got it, but they released video footage that they said showed a person of interest in the case.

It's grainy and hard to make out, but you can see someone in a dark hoodie and light jeans walking down a snowy alley.

They tracked that suspect to a car.

parked in the area of the Tepe's house around the time of the murders.

They then tracked that car to the area of Illinois where Dr. McKee practices medicine, and they believe that car belongs to Dr. McKee.

He's a vascular surgeon currently practicing in Rockford.

He studied medicine at Ohio State University.

He has no criminal record apart from a few traffic tickets.

None of his family members are responding to our repeated requests for comment.

We also haven't been able to reach any of his colleagues or patients.

Yeah, well, we're not sure exactly how they met, but he and Monique had a brief marriage from 2015 to 2017.

They had no children together.

Court documents cite incompatibility as the reason for the divorce.

Yeah, that's right.

I spoke to Rob Misler, and he told me that when news first broke of the double homicide, the family immediately suspected McKee because of the way Monique characterized their relationship.

He also said Monique would talk quite often about how terrified she was of him because he had threatened her life on multiple occasions when they were married.

This account was also backed up by a second family member.

Rob said he's unaware of whether Dr. McKee has made any recent threats to the couple, but he didn't rule out the possibility.