The phone slipped from Luna's trembling fingers. The gunshot echoed in her mind like a death knell.

"Grace!" She dove for the phone, pressing it against her ear. Static. Silence. Nothing.

Grayson caught her as her knees buckled. "Luna, what happened?"

"She's... the gunshot... Grace is..." The words fractured in her throat. Her sister's final warning replayed endlessly: Don't trust anyone. Not even—

"Breathe." Grayson's hands framed her face. "Tell me what you heard."

"I think ...