Murder victim Brandi Dunn and her husband were actually part of two communities.
They lived in Mercer County, but they were also active in an online community through an Internet Web site.
Channel 4 Action News has learned that police are looking closely at their postings on the Web site, and that the victim's husband is now refusing to answer any more questions from police.
As they go over the physical evidence at the murder and arson site, state police investigator are also scouring the Internet for clues.
Dunn and her husband both had personal Web pages at a site called My Space.
Police tell Channel 4 Action News that someone logged into Brandi Dunn's site under her name the day after she died and made changes and deletions.
"We're looking at all that to see what was there before, what's there after the fire. Who has put something on there, added to it, taken away from it, when that might have occurred," said Cpl. Cheryl Michalski of the Pennsylvania State Police.
Brandi Dunn posted this message the night before she was murdered:
"I know you are still mad at me, but I still love you. I'm sorry, baby."
The day after her murder, Scott Dunn posted this message to his dead wife:
"Hey, babe. I know you're in heaven right now, smiling down on all of us. Man, babe, I miss you so much. I know you're with God now. I miss you and love you so much. I keep waiting to see you or hear you voice or a phone call. This is so hard. You meant the world to me and now you're gone."
State police now say that Scott Dunn is refusing any further police interviews.
"He has invoked his right to an attorney, and he is no longer speaking to us," said Michalski.