The breakout sf thriller for fans of John Scalzi and Greg Rucka
Math-genius mercenary Cas Russell has decided to Fight Crime(tm). After all, with her extraordinary mathematical ability, she can neuter bombs or out-shoot an army. And the recent outbreak of violence in the world’s cities is Cas’s own fault ― she’s the one who crushed the organization of telepaths keeping the world’s worst offenders under control.
But Cas’s own power also has a history, one she can’t remember ― or control. One that's creeping into her mind and fracturing her sanity... just when she’s gotten herself on the hit list of every crime lord on the West Coast. And her best, only, sociopathic friend. Cas won’t be able to save the world. She might not even be able to save herself.
S. L. Huang has a math degree from MIT and is a professional stuntwoman & armorer who has worked in Hollywood on Battlestar Galactica and a number of other productions. Her short fiction has appeared in Strange Horizons, Nature, and The Best American Science Fiction and Fantasy 2016. She is the author of the Cas Russell series, which includes Zero Sum Game, Null Set, and Critical Point.