dailyjamiebower:

Jace raised his hand, and Clary saw dim light spark off the knife he was holding. It was oddly translucent, the blade clear as crystal, sharp as a shard of glass, the hilt set with red stones.
The bound boy gasped. “Valentine is back!” he protested, dragging at the bonds that held his hands behind his back. “All the Infernal Worlds know it, I know it, I can tell you where he is—”
Rage flared suddenly in Jace’s icy eyes. “By the Angel, every time we capture one of you bastards, you claim you know where Valentine is. Well, we know where he is too. He’s in hell. And you—” Jace turned the knife in his grasp, the edge sparking like a line of fire. “You can join him there.”
Clary could take no more. She stepped out from behind the pillar. “Stop!” she cried. “You can’t do this.”