Need Help.......?

On July 16, 2004, My Best friend....My Brother, William Adam Aslanian, Was Killed In Pensacola, FL. He Was Doused in Gasoline, And Set On Fire.....In The Middle Of A Street, In A Nice Sub-Division(in progress) Neighborhood.....In BROAD DAYLIGHT. The Construction Workers Nearby Heard Him Screaming, and ran toward him and put him out. He died later in the hospital, in a comatose state. No Witnesses, No Leads, No Nothing. The Damn Investigators Here Gave Up, Acting as If they Didn't Even Care. I Want Answers, His Family Wants Answers....My God-Daughter, (His Daughter Who Was Unborn At The Time and Is Now 3), Needs to know Who Her father Was And The Truth As To What Happened to Him that Horrific Day. What Do I Do To Get What I'm looking For?