Eric Söderqvist, professor of computer science at the Royal Institute of Technology in Stockholm, has invented Mind Surf, a thought-control system that allows people with disabilities to browse the web. Meanwhile, Lebanese Samir Mustaf, a former MIT professor whose daughter Mona was killed by an Israeli cluster bomb five years earlier, has just finished creating the most sophisticated computer virus the world has ever seen, for the purpose of launching a devastating cyber attack against Israel's financial system. When Eric's wife, Hanna, falls into a coma struck by an aggressive and previously unknown virus, after having tested her husband's invention the doctors are at a loss. Although everyone around him thinks he's gone mad, Eric becomes convinced that his wife has been infected by a powerful computer virus known as Mona, and that the only way he can save her life is by tracking down its creator. What follows is a compelling and high-octane pursuit. Conceptually breathtaking and emotionally powerful, Mona is a story about the good and the evil that people are prepared to do in order to save or avenge the ones they love.