An Illinois surgeon accused of gunning down his ex-wife, Monique Tepe, and her husband, the father of their two young children, Spencer Tepe, allegedly threatened to kill Monique nearly a decade ago on “multiple occasions” during their brief marriage.

Police arrested Michael D. McKee, 39, at a Chick-fil-A in Rockford, Illinois, on January 10, 2026, and charged him with two counts of murder in the deaths of Spencer and Monique Tepe. Authorities then upgraded the charges against McKee, who now faces premeditated aggravated murder.

Police report they have the suspect's vehicle on neighborhood video surveillance in the couple's Ohio neighborhood, arriving just before the murders and leaving shortly after.

A search warrant of McKee's luxury Chicago condo results in multiple weapons being found, with one of those weapons preliminarily matching evidence through ballistic testing to the Tepe murder scene.

Twelve weeks before McKee is accused of murder, he is sued for malpractice by a Nevada man who claims McKee went into hiding or just disappeared, so he couldn't be served with legal documents papers.

Nevada lawyer Dan Laird files the suit, but serving McKee was nearly impossible, as the surgery group he works for gives the attorney a fake address, and the phone number issued by the state medical board for McKee is a fax machine.

Joining Nancy Grace:

• Randy Kessler - Atlanta Trial Lawyer, Emory Law School Professor, Past Chair ABA Family Law Section, and Author of "Divorce, Protect Yourself, Your Kids and Your Future;" Instagram: @rkessler23, X: @GADivorce
• Dr. Bethany Marshall -  Psychoanalyst, Author: "Deal Breaker," and featured in hit show "Paris in Love" on Peacock; Instagram & TikTok: drbethanymarshall; Instagram & TikTok: drbethanymarshall, X: @DrBethanyLive
• Koa Lorimor - Former Army Sniper   
• Dr. Thomas Coyne - Chief Medical Examiner, District 2 Medical Examiner's Office, State of Florida; Forensic Pathologist, Neuropathologist, Toxicologist; X: @DrTMCoyne
• Susan Hendricks - Journalist, Author: “Down the Hill: My Descent into the Double Murder in Delphi;" IG @susan_hendricks X @SusanHendicks    
• Dave Mack - Investigative Reporter, 'Crime Stories'