Ad Limina: a novella of Catholics in space (servant of eternity) (Volume 1)

War is in the air, and the first native bishop of Mars has been called to Rome. As he makes his way across fifty million miles of space, he encounters a society moving into every corner of the solar system and teeming with every kind of decadence. "We are filling the emptiness with our emptiness," he thinks. A violent fascist opposition is rising, promising to restore humanity to glory. When the bishop gets a mysterious offer to leave the solar system, he is sorely tempted. But if he goes, he may be abandoning Earth to a brutal invasion only he can prevent.