It hit the internet before sunrise.
The video opened mid-laugh, camera shaking as a group of Trinity lads joked their way home down wet Dublin streets. Streetlights bouncing off rain-slick cobblestones. Someone singing badly. The usual.
Then a sound cut through it all. Sharp. Wrong.
The camera swung toward a dark alley. Two figures. Blue sparks. A smaller hooded shape moving in ways that didn't look quite human.
The clip was forty-three seconds long. Shaky. Grainy. Real.
It landed on YouTube at 3:42 AM under the title:
"Superhero fight?? Caught on cam, Camden Street Dublin (REAL footage)"
By 7 AM, it was everywhere.
Darren found out the way he found out about most things. His phone.
He'd been half-asleep, face-down in his pillow, one arm hanging off the mattress. The notification sound dragged him back to consciousness, then another, then another, until it was basically a continuous buzz and he gave up and reached for the screen.
He squinted at it.
Then sat up.
Then stared.
It had started the way these things always did. One person sharing it to a group chat. Then someone else. Then someone's aunt. Then a journalist in Cork who posted it on Twitter with the caption "okay what the HELL is this" and suddenly it had legs.
By the time Dubliners were dragging themselves out of bed and checking their phones over cups of tea, it was already on Facebook, already in WhatsApp groups, already the subject of a Reddit thread with four hundred comments and climbing.
Darren scrolled through it all, sitting on the edge of his bed in his boxers, increasingly unable to breathe.
@SeanOG97: woke up to find ireland has a superhero. country's losing its mind. good morning everyone
@CiaraC123: ireland just woke up with a superhero overnight and honestly I'm living for it. about time we joined the party. #DublinSuperhero
Someone on Reddit had found old CCTV footage from 2011. Same build. Same way of moving.
"He just stood there like a sentinel," one comment read. "Like he was guarding the place."
Someone screenshot it. Put it on Twitter.
The name stuck inside of twenty minutes.
@AoifeSaysRelax: I'm so proud we finally got a superhero but also kinda terrified we're getting villains next? Typical Ireland. #Sentinel
Darren stared at his own name on the screen. Well. Not his name. But still.
The debate kicked off fast because of course it did.
@GarethDubs: okay but Banshee is technically Irish and he's been an X-Man for years so like. Not exactly breaking news
@CiaraC123: Banshee moved to America and joined a private school in Westchester. Sentinel is HERE. In Dublin. On Camden Street. Different thing entirely
@PaddyFromCork: shamrock was Irish too and she retired to New York so we've been abandoned twice already tbf
@GarethDubs: fair point actually
By mid-morning the hashtag was trending worldwide. Half a million mentions by noon. The British were making jokes about it in that specific way they had. Canadians were excited, someone kept posting comparisons nobody else fully understood. The Australians were annoyed it hadn't happened to them. The Americans were already debating whether he was government.
@KieraTweets: love how ireland waited months after new york to casually drop their own hero. classic irish timing #Sentinel
Vine had gotten involved, which was somehow worse. Teenagers in hoodies launching themselves through cardboard boxes screaming SENTINEL before crashing into piles of cushions. One lad did it off a garden wall. Forty thousand loops and climbing.
Tumblr had made moodboards.
"When you finally take out the bins after your mam asked twelve times:"
[blurry GIF of Sentinel standing in the rain]
"Waiting for the bus in January:"
[same GIF]
"Me staring at my microwave:"
[same GIF but slower]
There was fanart. Some lad had drawn him in a wolfskin cloak with a spear like Cu Chulainn. Someone in the comments wrote "this is the most Irish thing that has ever happened" and it had forty thousand notes already.
Darren kept scrolling. Couldn't stop. That horrible fascinated part of his brain that wanted to see how bad it got.
Pretty bad, as it turned out.
French Twitter was largely unbothered, the way French Twitter tended to be about most things. A few accounts posted comparisons, shrugged in text form, moved on. The Japanese frame-by-frame breakdown of his Muay Thai technique was already at fifty thousand retweets and the annotations were genuinely more detailed than anything his trainer had ever told him. Russian accounts were quieter. A few cryptic posts. Nothing worth reading twice.
@IrishProblems: Ireland: no superheroes. Also Ireland: gets exactly one, immediately turns him into ten thousand memes. Typical. #Sentinel
By evening RTÉ ran a special report.
"Sentinel: Dublin's Newest Urban Legend?"
By night, CNN had picked it up.
"Ireland gets its first superhero - meet Sentinel."
There was a Facebook page. "Sentinel Support Group - Protecting Our Lad." Twelve thousand members.
A tweet with fifty thousand likes: "If America gets Cap we're keeping Sentinel. Sod off."
Someone was selling stickers. Actual stickers.
A pub near Camden had renamed three pints. The Wallbreaker. The Rain Punch. The Concrete Uppercut.
Darren sighed, slumped lower in his chair, and pulled his hoodie tighter over his face like a child hiding under the duvet.
"Shit."
Somewhere in Berlin.
The lights never went off.
They hadn't since 1965. The building had been a radio station once, then a records office, then six other things since, each transition quietly papered over. Right now it was an import logistics company on the outside. Nobody who worked the day shift asked questions about the inside.
Sitwell had the Dublin footage up before Quartermain's coat was off.
"Zero-four-twelve local. Public by zero-four-forty-four." He didn't look up from the console. "No Index matches. Ran it twice."
Quartermain poured a coffee. Watched the screen.
The footage was grainy. Enhanced but not clean. A narrow alley, rain, a hooded figure moving through four men. The whole thing took about nine seconds.
"Again," Quartermain said.
Sitwell ran it again.
In the corner Malhotra had been there since three in the morning. Second coffee already. Tablet angled away from everyone, the way it always was.
"Combat profile," Quartermain said.
"Muay Thai base. Boxing on top. It's trained, not self-taught. Someone who knows what they're doing has been working with him." Sitwell paused the footage on the frame where the hooded figure crouched over the last man down, two fingers to the neck. "But the application is his own. He's adapted it." Another pause. "Checks pulse after every engagement."
Quartermain looked at that frame for a moment without speaking.
"Strength metrics?"
"Three to four thousand newtons on the clean strikes. Kicks read higher." Sitwell pulled up the comparison overlay. "He's pulling back."
"Serum variant?"
"Ran it against everything we have. Blonsky profile, Rogers benchmarks, the fifties programmes, Weapon X files." Sitwell shook his head. "Nothing."
"MGH?"
"MGH gives you a window. Forty minutes maximum, hard comedown, you know exactly what you're looking at." He gestured at the screen. "This is sustained across multiple incidents spanning weeks. Whatever this is, it's not wearing off."
Quartermain drank his coffee. Looked at the screen.
The footage had looped back to the beginning again. The hooded figure standing still in the rain after it was over. Chest rising and falling. Not looking at the men on the ground. Not looking at the crate. Just standing there in that particular way.
Quartermain had been doing this job since 1971. Filed Index reports on forty-three enhanced individuals.
"Malhotra," he said.
Malhotra looked up from his tablet. Not quickly.
"Endogenous," he said. "The body doing it on its own. No external mechanism I can identify." A pause. "If the profile holds."
"Mutation?"
"Adjacent to it, possibly. Something dormant that activated." He tapped the tablet once. "If we could isolate the pathway..."
He didn't finish the sentence.
Nobody filled the silence.
"Cassidy?" Quartermain said.
"Acoustic mutation, flight capable. Different profile entirely."
"Fitzgerald?"
"Probability manipulation. No connection."
Quartermain set down his coffee. Looked at the screen one last time. A teenager, probably. Standing in a Dublin alley at four in the morning making sure the man he'd just put down was still breathing.
"Ireland's been clean for twenty years," Sitwell said. Not quite a question.
"Mm." Quartermain picked up his coffee again. "Tier-Two Unknown. Eyes on Dublin, no contact." A pause, small but there. "Don't file an Index report yet."
Sitwell looked at him.
"I want to know what we're dealing with before we decide what to do about it," Quartermain said.
It wasn't quite the same thing as what Sitwell had implied. Sitwell knew that. He didn't say so.
"Find out who named him Sentinel," Quartermain said. "Organic or coordinated."
It had been organic. A Reddit comment. A screenshot. A tweet. Twenty minutes and half a million people.
He went back to work. Fourteen other open files on his desk.
Malhotra closed his tablet.
Said nothing.