A/N: Hello! I hope y'all with love and enhoy this small little fic as much as I enjoyed writing it! I have been writing fan fiction for a while now, but this is my first endevour into the Castle fandom and the Caskett ship! I love them and the show and hope this little story does it justice! So tell me what you think and I will update it soon! Enjoy!

A Sound of Thunder and Rain

It had been a long week. A lot longer than usual for one of their murder cases. Besides the big storm that surprised New York with copious amounts of rain and thunder and lightning. A twelve-year-old boy was found stabbed to death on a cold, wet night in an alley in the Bronx. No apparent reason except maybe gang violence. However, as more evidence was uncovered, the bruising to the chest that matched as fists and possibly a baseball bat that Lanie discovered during the autopsy, a small plastic bag of cocaine powder in the kid's stomach, and a former juvenile record that Ryan and Esposito uncovered, just pointed to nothing more than a hit on a rival gang member. But why a kid? He was probably a drug mule for one of the five families in New York, he was twelve… What twelve year old gets beaten and stabbed to death on a cold, dark, and stormy night in New York City? That was Beckett and Castle's job. Help the dead, get justice for a silenced voice.

It wasn't easy, the older brothers that took care of the boy wouldn't talk, he didn't go to school, and none of the neighbors in the surrounding buildings saw or heard a thing.

Maybe a body drop? Beckett wondered. No… there was blood and signs of a struggle on the victim's hands that matched particulates to a dumpster and a patch of asphalt in the alley. Castle looks over, seeing Beckett struggle with the theories before offering his own silent suggestion, If the brothers aren't talking- who are also in the gang- maybe it was an inside job? Beckett read his theory on his face and gave a slight shrug to the possibility. Maybe the kid was involved with the police, possible snitching led to elimination of the rat? Beckett bounced back. Most likely because he was just a kid, a cop or agent persuaded him to give up info since his brothers were in the gang, he could've seen something! Beckett nodded quickly and began calling the gang task force to see if the kid was an informant while Castle leaned back into his chair with a sigh.

Ryan and Esposito watched from across the precinct at their desks of the interaction between the detective and honorary partner.

"That's always gets creepier every time they do that," Esposito shook his head with a sigh.

"Yeah. Whenever they bounce back theory nowadays they get even quieter and just stare at each other more and read minds." Ryan agreed, leaning his arms on his desk, watching Beckett rely information from the phone to Castle to put on the murder board.

"Do you think they know?" Esposito craned his neck back to look at his best friend.

"I know they do, they just haven't said it or talk about it." Ryan sighed at how clueless their friends were.

"Seriously. Lanie keeps calling me every few days from the morgue asking if they are together yet or not," Esposito chuckled, "She's getting tired of them coming into the morgue for the body and watching them stare at each other when they think the other isn't looking."

"Maybe this will change it. They always gravitate closer on hard cases." Ryan agreed.

"We'll see." Esposito looked back at them before an incoming call caught his attention.

This continued for the next few days, the brothers finally talked and agreed that their little brother was in the gang against their wishes, but what he did for the gang , they weren't sure. They knew he dealt drugs and smuggled them occasionally, but recently he had been running with the higher commanding officers of the gang and did private errands for them. They guess he probably talked to the cops and it got him killed. Getting to the gang runners was not easy; Beckett and Castle had to chase one through the pouring rain and gusting wind and ended up tackling him into a huge puddle of water. After a change of clothes from her cruiser, they grilled his ass in interrogation, Castle getting more and more frustrated as the member tried to run him in circles. Eventually, Beckett made him leave before he had a chance to pummel the guy, Castle stormed off to the break room and lay out on the couch, closing his eyes and trying to let the pounding rain soothe the anger within his mind. He was a child! If that ever happened to Alexis? He shuttered and screamed in his mind to stop, this wasn't Alexis, and it will never be Alexis. He took a few deep breathes to calm his panicking mind, settling with giving Alexis a big hug when he gets home. He was finally able to relax enough to take a small nap before he woke to Beckett gently rubbing his arm and holding out a cup of coffee.

"Thanks." He mumbled, sitting up and taking a sip of the hot liquid.

"You could have cost us the case in there you know?" Beckett said quietly, not irritated but concerned.

"I know and I'm sorry. Just… he was a kid. He didn't deserve to die like that in an alley all alone." Castle breathed out sharply, sitting back into the couch, Beckett slowly sitting down next to him.

"I know. But this is just one of the leaders, there are two more. One of them will break; we just got to find the weak spot alright?" Beckett encouraged, touching his shoulder in understanding, she could tell that his mind had wandered to all the wrong places, "I want to get this horrible son of a bitch just as badly as you." Castle dropped his head back on the couch and stared at the ceiling.

"I'm tired." He sighed, the sleeplessness of the past three days catching up to him.

"Well the storm is still raging outside. Wanna lift?" Beckett offered, deciding she needed the rest too if they were going to solve the case. She hadn't seen him this upset in a long time, not since he started looking into her mother's case, them saving the city from the dirty bomb, or even her getting shot at Montgomery's funeral. That's why she was comforting him, the coffee, the light touches, she noticed he did the same things for her when a case hit too close. This was one of those times and they needed a break.

"Thanks." He muttered before getting up and following her to the parking garage. She took him home before returning to her place and quickly falling into a dreamless sleep. Thankfully, a call from CSU didn't arrived until about seven and she dragged herself back to the precinct after giving a call to Castle that they had more evidence, a hair sample, it was one of the brothers.

A/N: Okay so far? Drop me a line and stay tuned!