22,000 MILES UP, THERE IS (STILL) NO BACKUP. They call it "Gridlocking"-maglev-bike races across the Fuse's vast solar arrays. Fast, dangerous, and very illegal. So when the #1 gridlock racer turns up dead, Klem and Ralph begin their own race to catch a killer...in a case that will force them into the dark underbellies of drug smuggling and terrorism in zero-g!
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