A Shadowhunter’s life is bound by duty, constrained by honor. The word of a Shadowhunter is a solemn pledge, and no vow is more sacred than the vow that binds parabatai, warrior partners—sworn to fight together, die together, but never to fall in love.
When Downworlders turn against the Clave, a new threat rises in the form of the Lord of Shadows—the Unseelie King, who sends his greatest warriors to slaughter those with Blackthorn blood and seize the Black Volume. As dangers close in, Julian devises a risky scheme that depends on the cooperation of an unpredictable enemy. But success may come with a price he and Emma cannot even imagine, one that will bring with it a reckoning of blood that could have repercussions for everyone and everything they hold dear.