She didn't stay in the room.
She would think, much later, that this was the moment everything after it became inevitable that if she'd simply obeyed him, the story might have unfolded differently, more slowly, with more room to be careful. But some new certainty had taken root in her since the poison, some instinct she didn't yet have language for, and it told her, with absolute conviction, that the eastern border was not the only danger moving through Wrenfall that night.
She found the stable yard already half empty, most of the household's fighting strength called to the border, and Idris standing alone near the tree line with two men she didn't recognize, Holloway colors on their collars, she realized, the same pack supposedly crossing the border a mile away.
She understood, in the single frozen second before any of them noticed her, exactly what she was looking at.
"You're not fighting them," she said, before she'd decided to speak at all. "You're meeting them."
Idris turned, and for the first time since she'd arrived at Wrenfall, she watched every trace of the easy, disarming smile fall away entirely, replaced by something colder and far more honest, a man who no longer saw any reason to perform for her.
"You should have stayed in your room, Mrs. Wren."
"You poisoned me in front of two hundred witnesses and then played the hero who called for help." Her voice didn't shake, though every part of her wanted it to. "You've been doing this for ten years, haven't you? The first Luna. The witness statement Cassius can't quite place a name to. You."
Something moved behind Idris's eyes, not guilt, she understood with a chill that went bone deep.
Certainty.
"You don't understand what's actually at stake here. You never will. You're a debt paid in a wedding dress, playing at being Luna of a pack you don't understand and were never meant to lead. Cassius rules through grief. His father ruled through fear. This territory has never once been led by someone willing to do what actually needs doing…"
"So you decided that was you."
"Someone had to." For a moment, just a moment, she thought she heard something almost like genuine anguish underneath the conviction, a man who had spent a decade building a version of himself he could live inside.
"I have watched this pack come to the edge of ruin twice now because the man on that throne could not see past his own grief long enough to lead it. I am not going to watch it happen a third time because he's fallen in love with the easiest kill his enemies have ever handed them."
The Holloway wolves shifted, restless, and Wren understood too late, the understanding arriving exactly one half second before her body did,that this had never been a rescue. It was a trade. Her, for whatever Idris had promised the rival pack in exchange for Wrenfall's collapse.
She ran. She didn't get far. A hand closed around her arm hard enough to bruise, spinning her back toward the tree line, and the last clear thought she had before the world narrowed into pure animal panic was that she had walked, with her own two feet, into exactly the trap the girth strap and the poisoned wine had both been building toward.
She heard Cassius before she saw him, a sound that wasn't human at all, tearing out of the dark like the border alarm itself had grown teeth and then he was there, between her and the hands that held her, no longer bothering with the shape of a man at all.
What happened in the next handful of seconds she would only ever remember in fragments: the Holloway wolves scattering before something far older and angrier than they'd bargained for; Idris's voice, sharp with genuine shock, shouting something she couldn't parse; her own back hitting the ground hard enough to steal the breath from her lungs as Cassius's body curled protectively over hers, blood, hers, his, she couldn't tell, hot against her skin.
And underneath all of it, rising through the panic like something that had been waiting its whole life for exactly this moment of terror and closeness to finally be permitted, she felt it: a pull, deep and absolute, radiating out from the place where his hand had found her throat, protective, claiming, undeniable, the bond neither of them had let themselves complete, closing the distance in a single, irreversible instant.
Cassius went rigid above her. She felt him feel it too.
"Wren." His voice, when it came, had broken all the way down to something raw and unguarded she had never once heard from him. "Tell me you feel that."
She did. God help her, she did and somewhere beyond the tree line, already running, already understanding that his window had closed considerably faster than he'd planned for, Idris Marrow disappeared into the dark with the certainty that the war he'd started ten years ago had just become impossible to stop by half-measures.