Twenty-one years. That's all we get. But not those who have found Sanctuary and not those who control the secret of Hourglass. Logan finally challenges Gant in an epic showdown for control of not just Hourglass, but the all-powerful Thinker. But it's more than just time clocks at stake. It's Jessica too. The concluding chapter of this sprawling and thoughtful adventure of what happens when a society simply uses and never builds comes down to this...