TULSA - It's a quiet home in north Tulsa where Grace and Walter Brown grew old together.
"My parents would generally sit on the porch in their swing and all the neighbors that went by would wave at them," said the couple's son, Joe Brown.
For the Browns, it was the perfect way to spend their golden years, enjoying retirement and spending time with family.
"My parents were great parents," said Joe. "They were always there for everyone of us."
So when their kids didn't hear from the Browns on a spring day in 2006, it seemed odd.
Concerned, the couple's daughter-in-law went to the Browns' home that day to make sure they were okay. Instead, she found them lying on the floor, covered in blood.
"She saw my dad up against the wall and she said, 'Walter, Walter,' and he wouldn't answer so she got scared," said Joe.
Someone beat the Browns to death with a hammer.
"When we arrived it was a very disturbing scene," said Jill Roberson of the Tulsa Police Department's Crime Stoppers Unit. "These two individuals had been beaten very badly."
But who did it? Seven years later, no one knows.
The gruesome crime scene didn't lead police to a suspect.
"With a violent crime like this, these people could do this again," said Roberson. "Maybe they have done this again and we just haven't caught them."
"The people who did this may very well be with their parents having a good time," said Joe. "These people need to be punished."
The Brown family spends their days praying for justice for Grace and Walter.
Their quiet nights on the swing, are now a distant memory.
If you know anything about who killed the Browns call Crime Stoppers at 918-596-COPS.
You can remain anonymous, Crime Stoppers does not want your name, just your information.
Tips could result in a reward of up to $1,500.