Leo was worried. He had crossed an ocean and fled a new and terrible tyrant, as a continent fell under his power.  But the ocean was not wide enough.   And he was afraid.  Soon, the tyrant might have a weapon to which there would be no answer. Leo, you see, worked with the tiniest, most invisible of things.  And he had discovered that they could be linked together in a daisy chain of power and death.  And in it he thought he also saw a crown for human knowledge. But others, across the ocean, also knew of these invisible things.  So Leo worried. And Leo went to his friend Albert.…