Sixth Column Author:Robert A. Heinlein One by one, the Free Nations had fallen, until America stood alone in arms against the World. Then, as researchers toiled desperately to complete work on a weapon that might yet turn the tide of battle, she too fell. — Now, though scattered resistance flares throughout our continent, the only real hope resides in a mountain redoubt where six men ... more »work in secret on a plan to rock the planet...« less