Name: Mary Lynn Carlson.
Died: April 21, 1997.
Age at death: 53.
Cause of death: Murder.
Location: Maricopa County, Arizona, USA.
Disability: Multiple Sclerosis.
Mary Lynn’s son and daughter-in-law had promised to care for her in exchange for room and board, but instead neglected her and spent her money. When Lynn moved into an assisted-living facility, they took out a life-insurance policy on her and hired two fellow lodgers to kill her. They stabbed her to death.
Perpetrator: Doris Ann Carlson (Daughter-in-law), convicted of murder, sentenced to death; David Carlson, conspiracy to commit murder, life sentence; Scott Smith, second degree murder, 10 years; John McReaken, first degree murder, life sentence.