Status: Last June, a judge dismissed a felony murder charge against a 16-year-old boy accused of taking part in a robbery in which Gardner was shot to death. Prosecutors said the state no longer could prove beyond a reasonable doubt that the boy was an accomplice to an unidentified man who shot Gardener.

George L. Thomas, 65

Killed: August 22, 2007

Cause of death: Thomas suffered multiple forms of trauma, but authorities have not said how he was killed.

Where: King's Inn, 915 W. Beltline, on Madison's South Side.

Status: Under investigation.

Kelly Nolan, 22

Killed: Date unknown, last seen June 23, 2007.

Cause of death: Authorities have not said how she died.

Where: Unknown. Nolan's body was found in a wooded area off Schneider Road in the town of Dunn on July 9, 2007.

Status: Police are investigating but have no suspect.

Amos Mortier, 27