London was a city of secrets, draped in mist and mischief, and Irene Adler had always known how to navigate both. Tonight, though, the air was sharp, the cold biting through the city like a blade. It was a night for crime, and she had always looked good in the dark.

Perched atop the roof of Sir Archibald Bellingham's manor, she peered through the skylight, gaze locked on the small golden scepter displayed beneath glass. Old, priceless, stolen by monarchs and thieves alike—now waiting for her to make it truly valuable by slipping it from under its case.

She adjusted her goggles, preparing to descend, when she noticed movement below. Someone else had arrived first.

Dark auburn curls, a military-cut coat, a posture of infuriating confidence. Helena G. Wells.

Irene exhaled sharply, lips curving into a smirk. "Well, well," she murmured, rolling her shoulders before dropping soundlessly to the floor behind her rival.

Helena, ever the picture of calm, barely reacted as she plucked a device from her pocket. "Miss Adler," she greeted, voice lilting with amusement. "I should have known."

"I do have exquisite taste," Irene purred. "And here I thought I'd be alone with my prize."

"Oh, darling," Helena said smoothly, "have you ever truly been alone?"

Before Irene could answer, a heavy click echoed through the study, followed by the unmistakable whir of gears grinding into motion.

Hidden panels slid open, revealing six mechanical sentries. Clockwork guards, their brass-plated eyes glowing blue, their metal limbs clicking with efficiency.

Irene sighed, already reaching for her pistol. "You do have a way of ruining an evening."

Helena flicked the dial on her Tesla gun, eyes gleaming. "I do love a good distraction."

The fight began in a storm of gunfire and electric blue arcs, bolts ricocheting off the metal bodies, gears grinding as the automatons lurched forward. Irene moved like water, a shadow slipping through chaos, while Helena's strikes were precise, calculated—scientific.

Then the Tesla gun whined.

The sound was unmistakable—an energy core overloading.

"Oh," Helena said, blinking once.

The gun detonated in a pulse of white-hot energy.

Irene had just enough time to swear before she was diving for cover. The blast tore through the air, shattering glass, sending sparks shooting across the room. The floor beneath them groaned, the walls pulsing with unnatural light.

Then, reality folded.

A rippling distortion twisted the space in front of them, a tear in the fabric of time. From it, two figures emerged—one grumbling and adjusting his spectacles, the other instinctively bracing for threats.

"Bloody hell," Artie Nielsen muttered, rubbing his temple. His gaze flicked to Helena, already exasperated. "What did you do?"

Helena straightened her coat with a dignified air. "I solved a problem."

"You caused a bigger one!"

The second figure, a man with the stance of someone used to action, scanned the room. He adjusted his coat, eyes flicking toward Artie before taking in the two women, the wreckage, and the still-glowing rift.

"I don't know what's happening," he said, voice casual, "but this place looks like a whole lot of trouble." He glanced at Artie. "Artie, I take it you know what's going on?"

Irene arched a brow, already intrigued. "And what exactly are you supposed to be?"

Pete gave her a lopsided grin. "Usually? The guy keeping Helena from making things worse, but you seem determined to join the list."

Irene pursed her lips. "How delightful."

Artie wasted no time. "Helena, we need to shut this rift down before it tears open any further."

Helena sighed, already pulling tools from her coat. "Fine. But if I get pulled into oblivion, I am haunting you."

"Like you don't already," Artie snapped.

Meanwhile, Irene—never one to let an opportunity pass—slipped into the shadows. If Helena was distracted, that meant there was time to make things more interesting. And what better way than testing the limits of Pete Lattimer's instincts?

Pete caught the movement. He knew exactly who she was, and she was absolutely about to make his life harder. "Oh no," he muttered, already moving. "No, no, no, we are not doing whatever it is you're planning."

"A pleasure," she called over her shoulder, slipping between the shelves. "But I do so hate being chased without a proper head start."

Peter exhaled, running a hand through his hair. "Yeah, okay. That's exactly what someone planning to ruin my night would say." He took off after her.

The rift pulsed, its edges flickering wildly. Artie swore under his breath as he tried to stabilize it, Helena snapping at him about the delicate nature of temporal manipulation.

"Less talking, more fixing!" Artie snapped. "We've got seconds!"

The air hummed with static. The floor trembled.

"Now or never," Helena murmured.

The rift flared.

Artie grabbed blindly, his hand catching the hem of Helena's dress. The vortex yanked them both into the light, and in an instant, they were gone.

Peter, still mid-step, twisted at the last moment, but the force pulled him forward. He vanished just as the rift snapped shut behind him.

Silence.

Irene, standing in the wreckage, looked around. Then she looked down at the scepter in her hand. With a slow, satisfied smirk, she tucked it down the front of her dress and strode toward the front door.

Then—

A thin wire snapped from above, hooking onto the scepter, pulling it free. Simultaneously, rough hands grabbed her wrists, cold metal snapping around them.

A familiar voice, low and amused. "I'll be taking that, Miss Adler."

She turned, lips already curving. There he was—her Holmes—standing smugly with the scepter, fishing line still in hand.

She laughed, delighted. "Oh, darling, you do know how to keep things interesting."

Then, in one swift motion, she twisted, leapt onto a passing wagon, and disappeared into the London night, her voice carrying back as the guards burst onto the scene.

"Merry Christmas, darling."

Holmes sighed, slipping the scepter into his coat as the guards descended. It was going to be a long night.