It might be an interesting legal case. Serial killer Ted Bundy confessed to about 30 killings before he was executed in Fla in 1989. For some reason all the biological evidence relating to Bundy was ordered destroyed but a vial of Bundy's blood recently turned up. There is a legal challenge representing Bundy to prevent using the DNA to clear some of the cold cases in Washington State and other areas where Bundy was active namely a 8 year old murdered girl in Bundy's neighborhood when he was 15. It might have been his first murder but he always denied his involvement. Why lawyers would want to prevent the closure of old murders allegedly committed by Bundy more than 20 years after he was executed is anyone's guess.