William F. Nolan 
Logan’s Run: Rebirth 

As the world deals with the loss of the Thinker; Logan, Jessica and their infant son Jaq have found a secluded spot to live out their new found extended lives. But the world isn’t done with Logan-6 and though he tries to stay out of things, a mysterious person from his past re-emerges with an agenda of her own and a score to settle with the retired Sandman.