When Interpol sends forensic linguist Lena Vale to an abandoned embassy in Istanbul, she expects dust and bureaucracy. Instead, in a basement behind a false wall, she finds a metal box. Inside are thirty-seven letters. The letters detail a conspiracy three decades old, a plan to collapse the global economy, a plot the writers called the Istanbul Protocol.
The letters name seven of the world's most powerful financiers, and one of them ordered the murder of her father.
Now she is in a deadly chase through the ancient streets of Istanbul. Hunted by a ruthless assassin and betrayed by the very authorities she once trusted. She must rely on Kael Durn to survive, a former MI6 agent framed by the same conspiracy. He has been hunting the same men for five years. Together they have six days to cross Istanbul, confront a murderer on a private island, and broadcast the truth before the Protocol is triggered and before the world economy collapses.
Lena Vale reads the pressure of ink against paper, and she follows the rhythm of the hand that wrote the letters.
