Skip was interviewed for the 48 Hours Special on it and on other programs as well. He seems to also be of the same opinion that law enforcement has dropped the ball. It takes a lot of courage to do what you are doing and I would encourage you to continue. Imagine the results if everyone who had connection to this case continued the fight for justice. I am sure the lack of results is disheartening. I don't know what is more scary the thought of one person killing girls for 40 years or that you've had multiple serial killers at work at the same time. Law enforcement either has way more info than they are saying or they have botched this worse than it seems. Have you looked for other possible siblings or spoken to your father's family? You don't have to answer, I was just thinking out loud. Good luck to you, my prayers are with you.
Closure is b.s.