Investigators obtain all available surveillance video from the Tepe neighborhood, focusing on the time between 2 a.m. and 5 a.m., and release video of one person walking in the alley behind the Tepe home.

Police believe that person is Michael McKee. One car with an Illinois license plate arrives in the neighborhood shortly before the Tepe murders take place, and leaves shortly thereafter.

The license plate on the vehicle is registered to Michael McKee, a vascular surgeon in Chicago. McKee is also Monique Tepe's ex-husband.

The vehicle registered to McKee is traced to Rockford, Illinois, and evidence inside the vehicle links McKee to the murders of Spencer and Monique. Police are not saying what evidence was found in the vehicle, and a motive for the murders has not been made public, but police say there is proof McKee had the vehicle prior to and after the homicides.

The arrest warrant for McKee says the murders took place at 3:52 am, and McKee is identified by surveillance video and the vehicle. McKee is charged with two counts of murder and is currently in a Winnebago County jail awaiting extradition to Ohio.

Monique Tepe married vascular surgeon Michael McKee in August 2015, but separated as a couple after just seven months. The couple had no children.

Monique stated the reason for the divorce was that they were "incompatible." After living separately and apart for a year, divorce proceedings began in May 2017, and the divorce was final the next month.

Joining Nancy Grace:

• Greg Morse - Criminal Defense Attorney of Morse Legal, Author of “The Untested” (found on Amazon)
• Dr. Bethany Marshall - Psychoanalyst, Author of "Deal Breaker: When to work on a relationship and when to walk away,” and featured in hit show: "Paris in Love" on Peacock; Instagram & TikTok: drbethanymarshall, X: @DrBethanyLive 
• Ron Bateman - Sheriff (Former Homicide and Undercover Narcotics) & Author: "Silent Blue Tears: Voice of The Victims;" X: Ronbatemanbooks, TikTok: @Ron.Bateman.655 
• Joseph Scott Morgan -  Professor of Forensics: Jacksonville State University, Author, "Blood Beneath My Feet", Host: "Body Bags with Joseph Scott Morgan", Instagram @JoScottForensic
• Susan Hendricks - Journalist, and Author of “Down the Hill: My Descent into the Double Murder in Delphi;" IG @susan_hendricks X @SusanHendicks 
• Dave Mack - Investigative Reporter, 'Crime Stories'