French teen Sacha Winters can't die. He can throw himself off a roof, be stabbed, even shot, and he will always survive. Until the day when a long-forgotten prophecy says he must die. Worse still, his death will trigger something awful. Something unimaginably deadly. And that day is closing in.

Taylor Montclair is a studious English girl, hanging out with her friends and desperate to get into Oxford University, until she starts shorting out the lights with her brain. She's also the only person on earth who can save Sacha.

There are just a couple of small problems. The two of them...

'Remember: Demons lie'

Locked away inside the fortified walls of Oxford's St Wilfred's College, surrounded by alchemists sworn to protect them, Taylor and Sacha are safe from the Darkness. For now.

But time is short. In seven days Sacha will turn 18, and the ancient curse that once made him invincible will kill him, unleashing unimaginable demonic horror upon the world.

There is one way to stop it. Taylor and Sacha must go to where the curse was first cast - the medieval French city of Carcassonne - and face the demons. The journey will be dangerous. And...