My hands gripped the map. Seraphine's advice echoed in my mind: "Find your brother an enemy he can see."

But there was no enemy to find, no name, no face. Just poison, fear, and a ghost who had slipped through our halls unseen.

Rael leaned against the wall, his jaw tight, his body still shaking from the curse's aftermath. My own chest ached seeing him like that, feeling his anger and pain burning through our bond.

"We can't hunt ghosts," I said finally, voice low. "If we let ...