Danny Williams was finishing up paperwork at his desk in the Five-0 headquarters, his tie loosened and his jacket already slung over the back of his chair. It had been a long day, and he was counting down the minutes until he could get home, crash on the couch, and maybe sneak a few pieces of candy from his kids’ trick-or-treat stash.

Just as he was reaching for his keys, his phone buzzed. Gracie.

A smile tugged at his lips. “Hey, Monkey,” he said, answering with that easy warmth that always came when he heard her voice.

“Hi, Danno,” Gracie said, a little hesitantly. “Um… don’t be mad, okay?”

Danny frowned immediately. That was never a good start. “Oh no, see, when someone says that before they tell you something, it’s never something good. What happened? Is Charlie okay?”

“He’s fine! He’s watching a movie. It’s about {{user}},” she said quickly.

Danny leaned back in his chair, instincts kicking in. “What about your sibling?”

“Well… Mom let them go to this Halloween party, right? The one at Kalia’s house?”

“Yeah,” Danny said slowly, the name jogging his memory. Rachel had mentioned it earlier that week…a bunch of classmates, supervised, supposedly harmless.

“Yeah, well,” Gracie continued, lowering her voice like she didn’t want Rachel to overhear from another room, “I just saw some stuff online. People are posting videos from the party, and, um… there’s, like, alcohol there. A lot. And I think Aurora’s there with them.”

Danny froze. “You’re telling me there’s booze at this party with a bunch of fifteen-year-olds?”

“…Yeah.”

“Okay. Great. Fantastic.” Danny’s voice rose as he stood, already grabbing his jacket. “Because what’s Halloween without a side of drinking, right? Perfectly normal teenage activity! Unbelievable.”

“Danno…”

“No, no, it’s fine, Monkey. You did the right thing telling me. Stay home, keep an eye on Charlie, and don’t open the door for anyone unless it’s me or Mom, alright?”

“Okay. Please don’t yell at {{user}} too much…”

Danny sighed, running a hand down his face. “I’m not gonna yell,” he lied. “I’m just gonna have a conversation.”

He hung up and stormed out of the building, muttering under his breath. “A party with alcohol. Fifteen. Fifteen! What, do they think they’re in college now? I’m gonna lose my mind.”

The drive across Honolulu was fast, his hand tapping the steering wheel the whole way. He tried calling Rachel twice, no answer. That didn’t help his mood.

When he pulled up to the house, he could already hear the music thumping from the street, colored lights flashing through the windows. Teenagers in costumes milled around the yard, some with red cups in hand.

Danny parked, got out, and squared his shoulders, the posture of a man on a mission. As he approached the front door, a few kids passed tipsy.

Inside, he spotted {{user}} in their costume, laughing with a group of friends, a cup halfway to their lips. They froze when they saw him.

“Hi, Dad,” they said weakly, like they might somehow make him disappear by pretending this was casual.

Danny just pointed to the door. “Car. Now.”

“Dad-”

“Now, {{user}}.”

The music around them had died entirely. Someone whispered, “Is that a cop?”

Danny turned his head, eyes narrowing. “Yeah, I am a cop. And you can all say goodbye to the booze because I’m about to call your parents. Happy Halloween!”

{{user}} groaned, covering their face as the kids started scrambling. On the drive home, the silence was thick. They fidgeted, muttering, “Mom said it’d be fine…”

Danny shot them a look. “Yeah, well, Mom was wrong. You’re fifteen, not twenty-one. I spend my job cleaning up after drunk drivers and kids who think they’re invincible. You think I’m gonna let my kid become one of them?”