Subspace cruising never bored Ensign Stephen Welnicki. The ship's computer rotated skew-quadro fields, inscrutably altering by threes the twenty-seven positional variables—leaving the watch officer idle. Thoughts were to be had for the thinking. Thoughts came unbidden to watch officer Welnicki. What if the never-found alien intelligence, feared so absurdly in official policy, was subspatial ? Weird things, eating mathematics, fighting with music. They'd attack ... Captain Kravitz and the others