“Fresh and exciting….A great start to an exciting series—and an exciting career.”

—Boing Boing

“A smart, calculated action thriller that keeps the reader guessing.” —Den of Geek

“Trust us, trigonometry has never sounded so cool.” —Paste Magazine

“Fun and original.” —San Francisco Chronicle

“The best novel I’ve read this year; a heroine I fell in love with.”—Eric Van Lustbader, #1 New York Times bestselling author

“Cas Russell is who I want to be when I grow up. She kicks ass with her fists and her brain—a true twenty-first century action hero. I loved this book.” —Richard Kadrey

“This book lines up like a perfect, elegant equation—it’s fast, furious, and adds up to one of the coolest, most crackin’ reads this year.” —Chuck Wendig, New York Times bestselling author

“The smartest and thrillingest book you’ll read all year.”—Ken Liu, author of The Grace of Kings and The Paper Menagerie and Other Stories

“Paced at a flat out sprint, Zero Sum Game deploys an astonishing array of weapons together with the prickly charms of its math genius protagonist on her turbulent journey toward trust and connection.”—Kate Elliott

“Intense, vivid, and insanely clever, with a great heroine—I couldn’t put it down. If only more authors with math degrees used them like this!”—Yoon Ha Lee, New York Times bestselling author

“A fast-paced, darkly humorous read with a lot of heart for fans of action and urban fantasy, as well as lovers of Wolverine and other morally ambiguous, gritty superheroes with a mysterious past.” —Booklist, Starred Review

“This hard-to-put-down, action-packed sf debut is intelligent and entertaining. With Cas, Huang has created an indelible, flawed character who makes mathematics seem almost magical.” —Library Journal, Starred Review

“A paranormal thriller in which both the action and the questions don’t stop….Cas is an awesome antiheroine…exciting, nasty fun…an excellent harbinger for books to come.” —Kirkus