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College student who says he mistook mom for intruder and beat her to death with a bat charged with murder

Megan Jones, The Beacon-News on

Published in News & Features

Asked about why his office charged Summerwill with second-degree murder, McMahon said that is what the evidence supports.

"The facts of the case will come out in court and we'll present our case, but he's charged with second-degree murder," McMahon said. "We believe that is the appropriate charge."

Mary Summerwill, 53, died a short time after the incident at Northwestern Medicine Delnor Hospital in Geneva. She died of cranial injuries that were consistent with being struck by a baseball bat, Coroner Rob Russell said.

Thomas Summerwill just finished his junior year of college and is a graduate of St. Charles North High School. Dixon said he has no prior criminal history.

Dixon said he is not sure why Mary Summerwill went into the bedroom that night.

"They had an excellent relationship," Dixon said. "I wouldn't even call it a typical relationship, I would say it's very loving. She adored him."


Thomas Summerwill posted $30,000 bond Tuesday and is due in court again May 23.

If convicted, the charge holds a punishment ranging from probation to up to 20 years in prison.

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