Daniel L. Bakker, 69, of McHenry, Illinois, was found dead at his home on September 17, 2015, having suffered a single gunshot wound to the head. His son, Michael Bakker, 49, was taken into custody the following day at a hotel in Lake Geneva, Wisconsin, after investigators found Michael had been using Daniel’s cell phone to text family members and impersonate his father, claiming he was ill. Michael later admitted to shooting his father in the back of the head while he sat on the couch and pleaded guilty to first-degree murder.

Family members described a strained relationship between father and son. Deborah Petska, Daniel’s daughter, located the body and called police, and she said her father had been a hard-working, dedicated family man who often helped Michael and his wife. Michael had a lengthy criminal past, including a 1990s prison escape from Stateville during which he was wounded after raising a replica handgun; he served time related to that episode and for possession of a stolen license plate. The motive for the killing has not been clearly established.

Did anyone in the McHenry or Lake Geneva area know Daniel or Michael and have observations that might explain what led to the killing?