Alternate Suspect: Homeless Man Gagnon

In September 2000, Toni Heartsong was killed her in Florida home. Her husband, Bob, was initially eliminated as a suspect, but in 2006, new DNA technology revealed his DNA was found in Toni's hand and his blood under her thumb. “48 Hours" Correspondent Harold Dow reports.

This classic "48 Hours" episode last aired on 8/15/2009. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.

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