"Most days, Masha Maximow was sure she'd chosen the winning side. In her day job as a counterterrorism wizard for an transnational cybersecurity firm, she made the hacks that allowed repressive regimes to spy on dissidents, and manipulate their every move. The perks were fantastic, and the pay was obscene. Just for fun, and to piss off her masters, Masha sometimes used her mad skills to help those same troublemakers evade detection, if their cause...

"Ten Americans have been carefully selected to Beta test a ground-breaking piece of spyware. FUSION can track anyone on earth. But does it work? For one contestant, an unassuming Boston librarian named Kaitlyn Day, the stakes are far higher than money, and her reasons for entering the test more personal than anyone imagines. When the timer hits zero, there will only be one winner"--