Praise for Null Set Tight action, compelling characters, and mathematics magic....Fans of Jessica Jones will enjoy meeting Cas. --Library Journal This exciting SF thriller sequel to Zero Sum Game keeps up the pace and piles on the tricky twists. --Publishers Weekly Action and superhero fans will enjoy this story of a powerful individual struggling with questions of identity and morality. --Booklist Praise for Zero Sum Game 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 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 Fast, furious, and adds up to one of the coolest, most crackin' reads this year. --Chuck Wendig 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 Paced at a flat out sprint. --Kate Elliott The smartest and thrillingest book you'll read all year. --Ken Liu Intense, vivid, and insanely clever, with a great heroine--I couldn't put it down. --Yoon Ha Lee, New York Times bestselling author 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