“It just came over the radio. The Comet disappeared three days out from Ganymede. She was escorted by a corvette of the Martian Navy,Murder Mystery And Makeup Shirt too.” The Comet, he knew, was a semi-passenger freighter of Martian register. “But the corvette?” he echoed blankly, feeling suddenly a bit frightened and confused. “It vanished too.” She snapped her fingers.