Logan's Run (film) 1  Ashley Cox as the timid girl. 2  Lara Lindsay as the woman runner and voice of the City computer (uncredited) 3  Gary Morgan as Billy. 4  Michelle Stacy as Mary 2. 5  Laura Hippe as the Woman Customer. 6  David Westberg as the Sandman. 7  Camilla Carr as the Sanctuary Woman. 8  Gregg Lewis as a Cub.