Titan's revolution is coming. All it needs is one final spark. Kale Drayton knows his place. As a Ringer born on Titan, he's used to keeping his head down and his mouth shut - no matter how much the Earthers abuse him or his own kind berate him. So, when he's caught stealing from a wealthy merchant, he's lucky to be sentenced to low-paying maintenance work on a gas-harvesting ship instead of life in a cell... or worse. But...