When Lady Cordelia, a brilliant mathematician, and her brother, Lord Woodbridge, disappear from London, rumors swirl concerning fraudulent bank loans and a secret consortium engaged in an illicit-and highly profitable-trading scheme that threatens the entire British economy. The incriminating evidence mounts, but for Charlotte and Wrexford, it's a question of loyalty and friendship. And so they begin a new investigation to clear the siblings' names, uncover their whereabouts, and unravel the truth behind the whispers. As they delve into the murky world of banking and international arbitrage, Charlotte and Wrexford also struggle to navigate their increasingly complex feelings for each other. But the clock is ticking-a cunning mastermind has emerged . . . along with some unexpected allies-and Charlotte and Wrexford must race to prevent disasters both economic and personal as they are forced into a dangerous match of wits in an attempt to beat the enemy at his own game.