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Crime Solvers Central
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Case Description

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Summary based on 7 sources
In the quiet community of Williamston, Michigan, the morning of September 8, 2017, was shattered by a tragic discovery. Lisa Marie Willson, a 51-year-old Caucasian woman, was found deceased in her home. The cause of death was a single gunshot wound to the back of her head, inflicted as she slept. Her life, marked by her dedication to her two sons, Michael and Andrew, and her career as a Financial Technical Advisor, had come to a violent and unexpected end.

The initial call to the police came from Lisa's younger son, 19-year-old Andrew Willson, who claimed to have found his mother dead upon returning home. However, inconsistencies in his story and the circumstances at the scene quickly led investigators to suspect his involvement. The Ingham County Sheriff's Office took Andrew into custody as the primary suspect in his mother's homicide. The motive, as it was later revealed, was a disagreement over a puppy Andrew had brought home that his mother would not allow him to keep.

During the investigation, Andrew confessed to the crime. He told detectives that after the argument with his mother, he retrieved a. 22 Magnum rifle from a locked cabinet in the home, entered his mother's bedroom while she was asleep, and shot her. Following the confession, Andrew David Willson was charged with murder and felony firearm possession. He was held without bond as the legal proceedings began.

The case brought to light Andrew's struggles with mental health. His defense attorney argued that at the time of the shooting, Andrew was suffering from a major depressive episode and was hearing voices. Despite his family's pleas for a sentence that would focus on treatment, Andrew Willson was convicted and sentenced to a minimum of 17 to 24.5 years in prison for second-degree murder and felony firearm charges. He is currently incarcerated at the Gus Harrison Correctional Facility.