A couple more of those still human among us hunched over, skin blurring, bones stretching, fur growing, muscles straining, voices groaning. Their transformations called up something in me. The itching turned to fire. Time to run.

The wolves of my pack paced into the woods, to the wilds of our territory.

Ben stood at my shoulder. He kissed my neck. “Ready?”

“No,” I said. “I’m never ready for this.”

“Yeah.” His voice was tight, and I knew what he was feeling. Wolf clawed at my insides, howling, It’s time, it’s time.

We walked farther into the woods, some of us human, some of us wolf, to the place where we made our den. A beautiful spot for a picnic, I always thought, shaded over with trees, a well-worn rock outcropping, lichen-covered granite forming a sheltered space. Plenty of space for a dozen and a half wolves to curl up and sleep. It smelled safe, despite my misgivings. We stripped.

A few steps away, Shaun had taken off his shirt. He looked through the trees, his gaze distant, vacant. His breaths were deep, fast. He grimaced and hunched his back.

A wolf howled, and around us human flesh melted, slipped, morphed into something else. Fur grew on smooth skin, bones stretching. Think of snowmelt becoming a rushing stream.

I quickly hugged Ben. All my muscles tense, I clung to him for a last lucid moment. “I love you,” I said.

He kissed me mouth to mouth. Then he fell, groaning, and I fell with him, and the wolves around us surged and whined, hungry, celebrating. I shut my eyes, clamped my jaw, let my mind slip away—

Her mind is torn. Senses in one direction, thoughts in another. Two-legged thoughts, from the other world. Worried, uneasy. But the fear has no shape, and she can’t focus on it. Her senses tell her that nothing is wrong. But the tension is there, shared among the whole pack. Tails twitch, ears flicker. Watchful. This is what the furless human world does to them. The pack’s children, weaker ones whom she must protect, are especially fearful, slinking close to the ground, whining.

She remembers how that felt, fearing all. She nips and nudges them, encourages them. This is their night. Must not fear.

Her mate is at her side, silver and burning. They bump shoulders, trot side by side, circling around, searching for scent. Hunting.

She stops. Ears up, tail straight. Hackles grow stiff like reeds. Whole body stiff. Because finally she smells it.

Too late, she smells it.

Sulfur, carbon, banked flames from hot coals. The two-legged self provides the names for what she smells. The names don’t matter; it’s wrong. She whines, yips—at her side, her mate bumps her, flank to flank. They look in all directions, but see nothing. Gather the pack, she thinks. Run. But where? The fear is confused, directionless. The scent doesn’t have a track. It’s everywhere. It simply appears.

A wolf yelps, high-pitched, pain-filled.

She and her mate together—he is at her shoulder—race, bounding in huge strides over brush and bracken until they find their threatened brother.

Not one of the weak ones. A strong male, the beta, able to take care of himself, yet something pins him to the ground, a weight on his back. He yelps and snaps, struggles to twist his mouth around to bite, to free his claws to slash at the thing. He only scratches at dirt. There is a scent of scorched fur.

Nothing attacks their kind. Unless they corner desperate prey, they have no enemies except for two-footed death—enemies from the other halves of their beings. This is something else. Maniacal, deadly, a shadow rising from the earth itself to swallow them.

She attacks. Her mate follows from the other side. Jaws open, throats rough with snarling, they can’t see what they attack, they only know something must be there.

But nothing is. They crash into each other and fall to the ground at their brother’s side, stunned.

Something sinks against her, pressing her. Human hands, but they’re too large, too strong, and too hot. In a panic she lurches, claws into earth, struggling to escape. Writhing with every muscle, she manages it, cries out, and then all her wolves are running. A burning smell fills her and drives her to panic.

They can run very, very fast when they need to.

She nips at flanks, pins her ears at the slow brothers and sisters, urging them on, faster. This is for their lives. The forest becomes a blur, the moonlight a tunnel through which they fly. Lungs pumping, hearts pounding, mouths open to take in air, tails straight out. Miles pass effortlessly. The pack together is a sea of motion.

The smell of sulfur fades. Soon she senses only forest, pine and damp, earth and life, as if the danger has never happened. She lopes around her pack and gives a signal to slow, to settle. The wolves mill, uncertain, panting, ears back—frightened.

So is she. She can’t hide it. But she’ll watch out for them.

She leads them to a place if not as comfortable as their usual den, at least defensible. It’s a space of sheltered trees on the side of a hill, open on all sides—she can watch anything that approaches, smell the air all around. They have plenty of chances to escape. She paces, counts her wolves by scent. All here. All safe, though shaken. She settles in to patrol. To keep watch until morning.

She watches the sunrise. The pack sleeps around her—naked, furless. They’ve all slipped back to their other halves. It’s sad, seeing them like this. But they still smell of pack, of family. Exhausted, sleep is heavy in her eyes, but fear keeps her upright.

Her mate wakens, and his furless hands reach for her. She sniffs him, wet nose tracing his limbs.

“Kitty.” His voice is thick, anxious. “You have to sleep. Come back to me, please.”

She licks his face, saying, But I’m here, I’m right here.

Others wake, moving slowly, groaning. Some of them flinch, looking around wide-eyed.

She yips. I’m standing guard, you see? I’m keeping watch.

“It’s our turn, Kitty. Let us watch. Sleep now.” He bends his face to her shoulder. She squirms under his touch. His fear increases hers.

“What’s wrong?” another asks.

“She won’t sleep.”

“Can’t say I blame her.”

Her mate again, almost desperate. “Shaun and Mick are keeping watch, okay? You can rest now.”

He whispers by her ear, soothing. Strokes her flanks. Urges her to sleep. Shelters her with his presence.

Her eyes close. She can no longer stand. When she sleeps, she’s curled up tight, stiff with worry.

I convulsed with the feeling of falling. My muscles twitched in anticipation of pain.

But I lay on solid ground, the earth of a forest, and with a great, frightened heave of breath, my lungs filled with Ben’s scent.

His embrace tightened around me. “Shh, shh. You’re okay. It’s okay.”

The morning was bright around us. Late morning, by the look and smell of things. I was usually up much earlier than this, the day after running. But Ben and I were both still naked. He held me close, his front to my back, his breath stirring my hair. We weren’t in our usual den. His whole body was taut with anxiety.