Wise men speak of it in hushed tones. Others are ready to kill for it. And now a murderous Tartar chief is bent on possessing it. But despite this, Joseph Charnetski is bound by an ancient oath to protect the jewel at all costs.When Joseph and his family seek refuge in medieval Krakow, they are caught up in the plots and intrigues of alchemists, hypnotists, and a dark messenger of evil. Will Joseph be able to protect the crystal—and the city—from the plundering Tartars?

    The pebble passes from his hand all the way to the Republic of Venice, the end of the Silk Road, where a boy cherishes it and sees the value of this gift from a girl at the end of the road. A Neal Porter Book