Cas Russell is good at math. Scary good. The vector calculus blazing through her head lets her smash through armed men twice her size and dodge every bullet in a gunfight, and she'll take any job for the right price. As far as Cas knows, she's the only person around with a superpower...until she discovers someone with a power even more dangerous than her own. Someone who can reach directly into people's minds and twist their brains into Moebius strips. Someone intent on becoming the world's puppet master. Cas should run, like she usually does, but for once she's involved. There's only one problem... She doesn't know which of her thoughts are her own anymore.
- ISBN10 1250180252
- ISBN13 9781250180254
- Publish Date 2 October 2018 (first published 27 March 2014)
- Publish Status Out of Print
- Out of Print 19 October 2021
- Imprint Tor Books
- Format Hardcover
- Pages 336
- Language English