The corridor erupted into chaos, the adepts scrambling to get away from the nocturne or rushing to fight it, but this time I wasn’t watching. I grabbed Caldera’s arm and yanked at her. Even wounded as she was, it was like trying to move a rock, but it got her attention. “Come on!”

We fled towards the stairs. Before we got out of sight I took a glance back and had one glimpse of Will on his back, slashing at the nocturne as it pulled him in. Captain America was kneeling and firing, gun flashing in staccato bursts, the nocturne reaching for him, and then we were racing up the stairs with the shouts and gunfire fading behind us.

By the time we made it up to the second floor Caldera was staggering and I knew we wouldn’t make it out of the mansion in time. I made a snap decision and pulled a door open. “In!” Once they were inside I slammed it behind us.

Sonder looked around, dismayed. We were in a bedroom, old and neglected, the bed covered in dust and the light dim through the grimy windows, and I realised that it was my old room. I hadn’t been intending to pick it but my feet had remembered the way. “There’s no way out!”

“You’ll have to gate us from here,” I told Caldera.

Caldera looked around and I knew what she was thinking. Gating is one of the more general elemental spells, but also one of the most dangerous; it works by creating a similarity between two points in space and to do it reliably you have to be very familiar with both the place you’re leaving and the place you’re going to. Caldera had studied the copse of trees on her last visit here; that was why she’d gated us there and not directly inside. She hadn’t studied this room. Gating from here would be risky.

On the other hand, trying to make the run out of the mansion with a bunch of homicidal adepts on our tail would be a lot more risky. I felt the futures fall into line as Caldera made her decision, and she began the spell. “Cover me,” she ordered.

I could hear the battle going on downstairs, and I didn’t know how much time we had. Nocturnes are semi-insubstantial and shooting them just draws their attention, but they can still be burnt and they’re still alive. If Will’s group could get organised—and unfortunately for me, they seemed to be pretty good at getting organised—then they’d be able to banish it. “I’ve got a forcewall,” I told Sonder, nodding at the door.