Looking for beer money, Walker robbed them of $40 and shot them to death while the couple fished in a St. Clair County creek.

[2][3] The execution was considered botched because the lethal injection machine was unable to make the drugs go through the kinked lines.

At age 14, Walker started committing crimes and began carrying out minor offenses and burglaries.

In a drunken rage, Walker got into a shootout with Whiteside County police and lost his right eye after being shot in the face during the exchange of gunfire.

[8][9] On June 18, 1983, Walker woke up and drank beer and vodka before spending the day at Silver Creek fishing.

At the creek, located just outside Mascoutah in St. Clair County, Walker met 21-year-old Kevin Paule and his fiancée, 25-year-old Sharon Winker.

[8][11] After the murders, Walker drove to the Runway Lounge bar near Scott Air Force Base and drank beer.

[8][11] When police arrived and searched the vehicle, they found multiple items that were confirmed to belong to Paule and Winker.

Officers arrested Walker, who waived extradition proceedings and was picked up by St. Clair County police on July 16.

[12] While on death row, Walker communicated with convicted serial killer John Wayne Gacy.

[15] Walker's execution was prolonged due to a kink in the plastic tubing, which stopped the flow of chemicals into his body.