The low hum of servers filled the quiet, blue-toned space. Monitors lined the walls, feeds from various undercover angles playing out in real time. Nell sat alone at the main console, headset on, eyes flicking between screens as she tracked Callen's movements inside a small veterinary clinic.
The team was running a low-risk op—intel-gathering, nothing explosive—so the mood was calm. Still, Nell's focus was razor-sharp, one hand on the keyboard, the other hovering near the comm switch.
Feed 4 caught her attention.
Callen was inside the exam room's waiting area, dressed casually, blending in easily with the cover story they'd crafted. His posture was relaxed, one hand stuffed in his jacket pocket as he waited for their suspect to return from the back.
But what pulled Nell's gaze—and held it—wasn't the mission.
It was the moment Callen glanced down at the floor beside the bench... and suddenly crouched.
A golden retriever puppy, no older than a few weeks, bounded over to him, tail wagging like a windmill. Another—something scrappy and floppy-eared—joined in a second later. Callen didn't hesitate. He leaned forward, chuckled quietly, and extended both hands to greet them.
Nell froze, watching.
He laughed—really laughed—as one of the puppies climbed into his lap. His head tipped back slightly as he scratched behind its ears. It wasn't the usual smirk he wore when undercover. This was something softer. Warmer.
Her hand stilled on the mouse as her heart skipped a beat.
There were very few moments she'd seen Callen look like that. So unguarded. So open. Not the agent. Not the chameleon. Somewhere in between.
And it made something flutter inside her. Something she rarely acknowledged. But it was always there, waiting beneath the surface. That quiet, inexplicable pull toward him. The way he could make her feel steadier just by being in the room. The way his voice could cut through chaos like an anchor. The way, when he looked at her—really looked—it made her feel seen in a way that nothing else did.
Safe.
But it wasn't real. Not exactly. She reminded herself of that, tried to anchor to it.
It was just the alias. The role he was playing today. That softer, playful side—that wasn't the whole of him. It was an echo of something that maybe existed underneath all the layers, but what she was seeing now? That was part of the mask. Part of the job.
She knew better than to fall for an undercover smile. Knew how easily warmth could be manufactured for the sake of a story, a cover. How often he played the kind, approachable man to draw someone in, and how good he was at it. She'd written the damn briefings herself. Tracked the false identities. Helped construct the lies.
And yet…
Nell smiled, unable to help herself. Her chest felt tight, but not in a bad way. More like something had cracked open just a little.
Then comms crackled in her ear—Sam's voice coming through. "Status check?"
Nell blinked, straightening, fingers dancing across the keys again.
"Callen's still in position," she said, clearing her throat. "No sign of the vet yet… but, uh, he's making friends."
Sam snorted on the other end. "He with the dogs?"
"Yep."
"Of course he is."
Nell clicked off the comms and glanced back at the screen, at Callen, muttering under her breath.
"And looking too good doing it."
On the screen, Callen glanced up—like he'd heard, and for a long few seconds, he looked straight toward the surveillance camera. Not in a real way, not like he knew what she'd said, he couldn't have, but Nell still felt caught.
He smiled again, stroking the puppy's head.
Nell reached forward, subtly turning down the volume on that feed. She didn't need to hear anything more.
That image would be imprinted in her mind for a long time.
And the feeling in her chest—quiet but persistent—would linger even longer. Whether it was real or part of the alias, part of her knew it didn't matter. Because even if it was just pretend, it still made her feel something she couldn't quite explain. Something real.