The scout's name was Karan Deshmukh, and he'd been part of a rival DARF unit for six years, and by the time Team 7 met him in a debrief room two nights later, he still hadn't fully stopped shaking.
"I went in with a torch and a partner," he said, hands wrapped around a cup of tea he wasn't drinking. "Standard bank sweep, nothing that should've been dangerous. The fog came in from nowhere. One second I could see my partner three feet away, the next I couldn't see my own hand." He swallowed hard. "Then I saw the shape. Long neck, up out of the water, just — there, in the mist, watching. I don't know how long I looked at it before I ran. Could've been a second. Could've been an hour."
"And your partner?" Rathore asked, gently.
"Found her wandering two kilometers downriver the next morning. Fine, physically. She doesn't remember any of it." Karan's jaw tightened. "I don't know if that's better or worse than what I've got."
The Yamuna at midnight looked, at first, like the Yamuna always looked — sluggish, dark, indifferent, the city's lights smeared faintly across its surface. Then the fog came in.
It arrived wrong. Shyam felt it before he understood why: real fog rolled, thickened gradually, gave a person time to notice it happening. This came in fast and localized, a wall rather than a haze, swallowing the riverbank in patches that made no meteorological sense at all.
"Command, this is Rathore. Visual confirmed, unusual atmospheric behavior, beginning search pattern." She glanced around the assembled team — herself, Farah, Nasreen, Ishita, Dev, Shyam, Anya, the others held in reserve at the vehicles. "Pairs. Stay within shouting distance at all times. If you lose sight of your partner, you stop moving and you call it in immediately. Nobody plays hero tonight."
They split. Shyam found himself paired with Ishita, which he suspected wasn't an accident — Rathore pairing her two Water Monster-footed combatants together, whatever insight that shared class might offer against a creature that was, by every account, also Water Monster-footed itself.
"Stay close," Ishita said, voice low, eyes already scanning the mist ahead with the particular calm alertness Shyam had come to associate with her. "Whatever this is, it's using water and fog the way we use water. That means it might read us the same way it reads everything else out here."
"Meaning?"
"Meaning don't assume being the same class makes you safe. It might make you more interesting."
They moved along the bank slowly, torches doing very little against fog that seemed to swallow light rather than simply block it. Shyam found his mind doing what it always did under pressure — cataloguing, searching for pattern in the chaos — and after several minutes of walking, something about the fog's behavior began to nag at him.
"It's not spreading evenly," he said quietly.
Ishita glanced at him. "Go on."
"Fog spreads with wind, with temperature gradients — physics. This isn't doing that. It's staying thickest in a rough band along the water's edge, and it's — " he paused, listening, "—I think it's responding to sound. Every time one of the teams calls a position check, the fog near them thickens for a few seconds afterward before easing off."
Ishita's expression sharpened. "You're saying it's listening."
"I'm saying something is."
They kept moving, more carefully now, Shyam's attention split between his own footing and the mist's subtle, wrongly-patterned drift, when the fog directly ahead of them thinned for just a moment — long enough, terrible enough, for both of them to see it.
A neck, longer than seemed structurally reasonable, rising out of the black water in a slow, deliberate curve, water sheeting off scales that caught no light at all despite the torches. No visible eyes. No visible face, really — just the impression of size, of age, of something that had been doing this exact slow reveal to exactly this kind of frightened intruder for far longer than DARF had existed.
Then the fog closed back over it, and it was gone.
"Command." Ishita's voice was admirably steady, though her hand had found Shyam's shoulder in a grip that suggested otherwise. "Visual confirmed. Long-necked UMA, consistent with Loch Ness Monster class reports. No class-tier confirmation possible — visibility's too poor to assess size markers or scarring patterns."
"Copy," Rathore's voice crackled back. "Hold position, do not engage, I'm bringing everyone back toward the vehicles—"
The transmission cut into static, and the fog, as if it had been waiting for exactly that interruption, thickened violently around them both.
"Ishita?" Shyam's own voice sounded strange to him, muffled and close, the fog pressing in against his ears as much as his eyes.
No answer.
"Ishita!"
He reached out and found nothing where her shoulder had been a moment before — not absence exactly, more like the fog itself had thickened between them into something with texture, something that didn't want to let his hand pass through to where she should have been standing.
Panic arrived fast and complete, the specific, animal terror of losing a fixed point in a world that had gone entirely white. He remembered, dimly, through the fear, what Rathore had said. Stop moving. Call it in.
He stopped. He called it in, voice cracking. "Command, this is Raj, I've lost visual on Pillai, I don't know if she can hear me, I'm not moving, repeat, I am not moving—"
Something in the mist moved closer. Not the long-necked shape — something smaller, faster, disturbing the fog's texture in a ripple that passed uncomfortably near where he stood.
Then, abruptly, a hand closed around his arm, and Anya's voice, fierce and close and real, cut through the white. "I've got you. Don't fight me, just move."
She hauled him sideways, out of whatever current in the fog had been closing around him, and within a dozen stumbling steps the mist thinned enough for shapes to resolve again — Ishita, ten meters off, being guided back by Dev with the same careful urgency, both of them shaken but upright.
They regrouped at the vehicles in silence, the whole team accounted for, nobody seriously hurt, everybody's nerves stretched thin enough to hum.
"Report," Rathore said, once the headcount confirmed everyone was present.
"It's listening," Shyam said, still catching his breath. "The fog reacts to sound, to movement — it's not just cover, Captain, I think it's actively hunting inside it. And I think it separated me and Ishita on purpose. Tested which of us it wanted alone."
Rathore's jaw tightened. "Then we're not equipped for this tonight. We pull back, we study what we've got, and we come back with a plan instead of torches and good intentions." She looked out at the riverbank one last time before turning toward the vehicles.
Behind them, the fog — which should have taken the better part of an hour to naturally dissipate — thinned and vanished within a matter of seconds, the Yamuna's black water settling back into ordinary, indifferent stillness, as though whatever had been watching them all night had simply decided, calmly, that it had seen enough for now.