On September 9, 1974, 27-year-old white woman Nancy Carole Lossman was found murdered in her Crystal Lake, Illinois apartment. Her three-year-old daughter, Lisa, was also discovered deceased at the scene. Nancy's body bore multiple bite marks, a detail that would later become crucial in identifying her killer. Her six-year-old son, Robert, survived the attack, having been found unconscious due to smoke inhalation.
The investigation into Nancy's death remained unresolved for two years until forensic odontologist Dr. Lowell Levine matched the bite marks on her body to dental records of Richard Otto Macek, a 26-year-old white man from McHenry, Illinois. Macek had his teeth removed shortly after the murders, raising suspicions. In 1976, he was indicted for the murders of Nancy and Lisa Lossman. He pleaded guilty to Nancy's murder and received a sentence of 200 to 400 years in prison. Macek was also convicted of other violent crimes, including the 1974 murder of Paula Cupit in Wisconsin. He died by suicide in his prison cell on March 2, 1987.
