Some secrets sleep for millennia. Others become Cold War weapons.

1986.

Deep beneath the sands of Greece, an ancient bronze tablet surfaces, whispering a terrifying prophecy from the Oracle of Delphi herself. It speaks of a shadow rising in the East, a power capable of shattering the world. For Section M, a clandestine US agency fighting wars in the shadows, the race against the KGB is on.

Thrown into this deadly game is Dr. Leon Saint, a historian more comfortable with books than bullets, and Agent Seraphina Volkov, a lethal spy haunted by her own secrets. Pursued relentlessly by the ruthless Colonel Orlov - acting under orders from Moscow's most shadowy authority - across treacherous Cold War landscapes, this unlikely pair must decipher the oracle's cryptic clues.

Their quest leads them from Istanbul's bustling bazaars to the dark heart of forbidden mountains, hunting for a legendary obsidian artifact - the key to unlocking the prophecy and controlling the power it foretells. But the Labyrinth awaits, guarding secrets older than myth, and a conspiracy stretching from ancient Greece to the Kremlin's corridors.

Can a scholar and a spy survive the chase, unlock the past, and disarm a threat millennia in the making before the Delphi Protocol plunges the world into an age of terror?