The Defenders and Three Others

Here are "The Defenders," in which mankind has taken refuge beneath the Earth's surface, leaving all-out war to robots … "Beyond Lies the Wub," in which a highly philosophical Martian creature finds itself on the wrong end of the dinner table ... "The Crystal Crypt," in which the last Terran ship from Mars finds terrorists aboard ... and "Beyond the Door," a most unusual story in which an abusive husband ends up with more than he bargains for!