“This time-looped dramedy is as funny as it is thought-provoking." -- Publishers Weekly, starred review

The bold new work from award-winning author Adrian Tchaikovsky - a smart, funny tale of time-travel and paradox

Welcome to the end of time. It’s a perfect day.

Nobody remembers how the Causality War started. Really, there’s no-one to remember, and nothing for them to remember if there were; that’s sort of the point. We were time warriors, and we broke time. I was the one who ended it. Ended the fighting, tidied up the damage as much as I could. Then I came here, to the end of it all, and gave myself a mission: to never let it happen again.