I adjusted my course, heading straight for McKay. He saw me bearing down on him and found an extra spurt of energy, flying to his feet, bruises forgotten as he bolted after Elena.

The clatter of nails on wood told me she was on the train tracks. As we crested the embankment, I saw her tearing along the railway bridge, Cain a half-dozen strides behind.

I caught up with McKay at the bridge’s edge. He faltered, a leg probably complaining from his fall. I launched myself and landed on him. As he went down, his head shot back, throat exposed. I chomped down, eyes shut against the spray of hot blood as I whipped him off his feet. He went wild, all four legs kicking and scratching, body twisting.

I bit harder and slammed him into a bridge girder. His throat ripped on impact, a huge chunk of flesh coming free, my mouth filling with blood. I dropped him, and he fell, shuddering, dying. I bit the back of his neck, swung him up again, and pitched him into the river below.

A quick kill, but during those few minutes, the blood pounding in my ears blocked everything else, and it was only as McKay’s body splashed into the water that I finally heard Elena’s snarls. I started running. Halfway down the bridge, she’d stopped and was facing off with Cain, head down, ears back, fur on end.

At first, the mutt seemed uncertain, prancing forward, then back, like a boxer bouncing on his heels waiting for the signal. As I rocketed down the tracks, paws pounding the railway ties, he stopped dancing and dropped into fighting position, as if hearing the sound he’d been waiting for: the arrival of his backup.

I slowed, rolling my paws, footfalls going silent. Then, right behind him, I hunkered down and let out a low growl. He turned and, had he been in human form, he would have fallen over backward. On four legs, he did an odd little stumble, paws scrabbling against the gravel as he veered toward me.