VASSALS OF THE LODE-STAR by Gardner F. Fox Caught up in a mad space-time snarl, making their last grim stand against a surging android horde, the outlaw man-beasts of the Settlements could not see why might-thewed Thor Masterson of Terra chose instead to battle a strange green flame! THE MARTIAN CIRCLE by Raymond F. Jones Who was this sweet-voiced singer weaving a spell of dreams and drugs that drove men mad and threatened to smash the System? SBI Captain Roal Hartford dared the death of the Thousand Minds to learn her dreadful secret!