The engine of Sam's Challenger idled low, a steady rumble under the golden Los Angeles sun. Across the street stood a building that looked innocuous enough—modern glass walls, sharp lines, a name no one would remember. But inside, they suspected a data laundering operation, one that had already burned three whistleblowers and might be funneling intel to foreign buyers.
That's where Nell came in.
Callen sat in the passenger seat, elbow perched on the window frame, sunglasses hiding the direction of his gaze—but they were on her. Always on her when she was like this. Not in the way anyone else might notice. Not overt. But steady. Tracking. Watching her prepare like a soldier sharpening her blade.
She was sitting in the back seat, legs crossed, quiet, composed. Her dress was simple but flawless, navy blue and sharply tailored, hitting just above the knee. The blazer made her look official, intimidating in that subtle, polished way she could summon on command.
And then she reached for it—the lipstick.
Callen didn't have to see the color to know which one it was. She only used that particular shade for ops like this. Not for dates, not for casual drinks after hours. It was deep and bold and undeniable.
And for her, it was armor.
He watched her twist the tube open, catching the faint glint of silver as the bullet emerged—scarlet and deliberate. She leaned forward, her hand braced lightly between the seats, and applied the color with smooth, practiced ease, using the rearview mirror to guide each precise stroke.
Callen didn't say anything.
But he felt it—the shift.
It was like watching a line being drawn, one she needed to place between herself and the woman she was about to become. The lipstick wasn't just for show. It wasn't vanity. It was a mask. A way of stepping into the part without letting it touch her too deeply. He understood that—too well.
He tilted his head, just slightly, and the corner of his mouth curled in something soft, wry.
"She's got the lipstick on," he muttered under his breath. "She's good."
Nell capped the tube, slipped it back into her bag like it was just another piece of her toolkit, and leaned back in her seat with quiet finality. The transformation was complete. Clean. Subtle. But it struck him every time—how easily she could flip that switch. How calm she was about it.
But what stirred in him now wasn't about the role she played.
It was about her.
Callen stepped out of the car first, rounding the door in silence. He pulled his seat forward and offered her a hand. It was automatic. Natural. He'd done it a hundred times with a hundred different partners, but with her… it always meant something different.
She placed her hand in his without hesitation. He helped her out, his hand lingering longer than necessary. It grounded him—her warmth, the quiet steadiness of her grip. Then she was adjusting her dress, throwing the bag over her shoulder, and squaring herself toward the building with the kind of confidence most people had to fake.
Callen didn't move.
Not right away.
He just… watched her.
Watched the way the sun caught the soft red of her mouth. Watched how the role fit her—not like a costume, but like a second skin. Watched how effortlessly she turned into someone else, even though he knew exactly who she really was underneath.
And maybe that's what unsettled him the most.
Because it wasn't pretend. Not with her.
She turned to glance at him then, catching something in his expression he hadn't meant to let show. Her eyes flicked over his face—just a second, but it was enough.
She smoothed her fingertip over her bottom lip, then pressing them together to set the color.
"I won't be long," she said, cool and soft.
He nodded, but it took a beat. "Take your time."
It came out lower than he meant it to.
And then she was gone, heels clicking smartly across the pavement, her silhouette sharp against the glass as she stepped through the doors.
Callen stood there a second longer than he should've.
It wasn't just the way she looked. Though, yeah, that wasn't helping.
It was the way she moved through the world. Calm. Controlled. Entirely in command of the chaos around her.
And the part that twisted something low in his chest?
She had no idea what she looked like to him right now.
Or maybe—just maybe—she knew exactly.
He turned back toward the car, jaw tight, sunglasses sliding back into place like a barrier he suddenly needed.
Because if this job had taught him anything, it was how to keep his distance.
But today? Watching her walk into that building, bold and brilliant and armed with nothing more than lipstick and quiet confidence…
He wasn't sure he wanted to anymore.