The Singing Bell (Asimov)
Master criminal Louis Peyton spends each August totally isolated on his Colorado ranch behind a powerful force-field. One August, Albert Cornwall takes him to the Moon to retrieve a cache of extremely valuable lunar rocks.
Star Light (Zelazny/Shekley)
Arthur Trent is a starship pilot and the young accomplice of Brennmeyer, an elderly and brilliant researcher. Brennmeyer has been planning for thirty years to flee local governments and find a place from which to deal lucratively with criminal elements outside of known civilization.