In The Exphoria Code, MI6 officer and elite hacker Brigitte Sharp foiled a terror attack on London that used stolen military drone software to deliver a 'dirty bomb'. Now Bridge is back, battling a series of hacks and ransom-ware attacks, masterminded by a hacker known only as 'Tempus', who is targeting politicians and government officials with impunity. Discovering that this campaign is linked to a cyber-attack on the London G20 summit, she is drawn into the dark-web world of crypto-currencies, Russian hackers and an African rebel militia.