Lisa Lossman was three years old when she and her mother, 26-year-old Nancy Lossman, were murdered in Crystal Lake, Illinois, in late 1974.

The killings were linked to Richard Otto Macek, a serial offender who had committed violent crimes in Wisconsin and Illinois. Macek was arrested in December 1975 in San Bernardino, California, and later confessed to multiple crimes, including the murders of Lisa and Nancy Lossman. He received a life sentence in Wisconsin in 1977 and additional Illinois sentences that included a term of 200 to 400 years for the double homicide.

Macek died by suicide in prison in 1987. The loss of Lisa and Nancy Lossman remains a stark example of the violence attributed to him. If anyone knew the Lossman family or has information about those events in Crystal Lake in 1974, please share what is known.