Mary Lou Bigford murder trial
Sara Spencer-Noggle questions physician N. Debra Simms during the Mary Lou Bigford murder trial. / (Susan Field | The Morning Sun)

Closing comments will begin Tuesday in the Mary Lou Bigford murder trial. Defense attorney Sara Spencer-Noggle wrapped up her defense late Monday morning. Bigford faces one open count of murder, one count of first-degree murder and a felony firearm violation.