Part one of the investigation into the murder of Fred Jablin. On October 30, 2004, Fred Jablin was gunned down in the driveway of his Virginia home. He was a well-respected college professor and devoted father to three young children. Police zeroed in on Fred's ex-wife, Piper, who owed him nearly $7,000 in back child support. Circumstantial evidence, including an airline ticket, two wigs and gas purchased in the area, all with a credit card in the name of Piper’s former boyfriend, indicated to investigators that Piper plotted to kill her husband using her sister's identity. “48 Hours" correspondent Harold Dow reports. This classic "48 Hours" episode last aired on 8/25/2007. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.