Just a thought that occurred to me in Season 4 finale of Teen Wolf and given their reputation as hunters, it would make sense if the Argents at least heard of the Winchesters and knew Bobby.

Disclaimer: I do not own Teen Wolf or Supernatural.

Kate kept running through the catacombs and dodging gunshots with her brother Argent chasing her.

Argent aimed the gun and pulled the trigger, only to hear 'click' and realize he had run out of bullets as Kate stopped and both of them were panting, with Kate turning to Argent in betrayal. "You wanna kill me, Chris?"

"No." Argent said, staggering on his feet. "But I don't wanna save you anymore either. I don't know if you're worth saving."

"Just like when we were kids." Kate scoffed. "Always trying to make me the bad guy. You can't see them clearly anymore, can you? Scott's not your little hero, none of them are. Not when they killed Allison."

Argent felt his heart shatter once more, the image of his daughter's corpse flashing in front of his eyes and not even once had he blamed Scott or anyone from the Pack for her death. "Allison died. She died saving her friends. Who would you die for? Hmmm?"

Kate suppressed the urge to laugh as she began retreating into the tunnels. "You're not gonna kill me. And you're not gonna catch me. Not you. Not Peter. And not the Calaveras."

"I don't have to. But someone else can." Argent said with a smirk.

Kate barely had a second to look confused when next thing she knew, a gunshot rang out and she fell down, behind her two silhouettes of men, one of them pointing a gun.

Kate was in shackles in a van, when Argent faced Dean and Sam Winchesters.

"Thank you." Argent said, shaking their hands.

"Took a while for us to get to Mexico, but at least we got here right on time." Sam said.

"Good thing we got your call on time." Dean said.

"I never knew your father personally but I know he was one of the best hunters. Bobby sure liked to talk him up." Argent said as they chuckled.

"Yeah, sounds like him." Sam said.

"We heard everything when we were in the tunnels." Dean said, looking at Argent in sympathy. "Some people are past saving. With them, it's clear how their story ends. At the edge of the blade or a barrel of a gun."

"I hope that day doesn't come anytime soon." Argent said, sad by how far had his sister fallen.

"She's escaped from the Calaveras before, she could do it again." Sam said.

"Look, you don't wanna have blood of your family on your hands, I get it, no one deserves it but we need to make sure she doesn't hurt anyone ever again." Dean said.

"What are you suggesting? Eichen House?" Argent asked.

Dean and Sam looked at each other grimly before turning to Argent.

"Let's just say you don't want to know." Dean said with a dark look in his eyes.

"Are they gonna kill her?" Argent asked.

"I'm sure she will wish they had." Sam said grimly, knowing full well from his own experience with them what were they capable of.

When Kate woke up, she felt cold metal pressing against her back as she tried to get up, only for a metal collar around her neck and restraints binding her wrists and ankles and waist to pin her down before she woke up and saw blinding flash of light and an IV drip with sedative was attached to her vein on her arm.

"What is this? Where am I?" Kate snarled, looking around and baring her teeth.

"Welcome, Miss Argent."

Kate heard the English accent and looked up to see a man in surgical gown smiling at her.

"Welcome to London. My name is Arthur Ketch. We've heard so much about your family. Though it is fascinating that you have become a Werejaguar. I though it was only a myth." Arthur said.

"Who are you?" Kate demanded.

Arthur looked up, reminiscing before smiling at her. "Beholders. Protectors. Chroniclers. Observers. We have many branches to go by. Though we know only myths and stories about the likes of you and you should be honored to be the first Werejaguar we examine."

"You're gonna dissect me?" Kate growled as she bared her fangs and began thrashing and shaking around weakly as she tried to struggle out of the restraints but was unable to as she felt weakened by the sedative.

"Cease your struggles, even if you still had your strength and could break through the metal, these restraints have been warded to hold down creatures like you. It's amazing what magic and science can do when combined together." Arthur said and Kate froze. "Oh, don't worry, Katherine, we're not going to kill you. Though we'd like to learn about you as much as possible in case we have to deal with another Werejaguar."

Arthur reached for Kate's mouth and forced it open before he managed to get one of her fangs and began prying it out as Kate let out screams of pain.

Kate was a fun villain in the show, even though she was a deranged psychopath that kept coming more and more undone as the show went on and causing trouble for the Pack and asides from Derek, Argent or Malia, none of the Pack has the killer drive in them, unless they are pushed to the corner with no other choice left and while Argent has as many reasons to take her out as rest of the group, no one should live with the guilt of having the blood of the family on their hands.

Plus, with the connections the Argents have and their reputation and skills as werewolf hunters, it would make sense if they had crossed paths with the Winchesters. And while most of British Men of Letters are ruthless psychopaths and only few of them with some reason like Mick or Toni, Kate is just as much psychotic if not worse, so no sympathies for her here as they would make her wish she was dead and it was Argent or Calaveras that killed her.

So, what do you guys think?

Please review and let me know if you have enjoyed this one-shot.

With regards

Bl4ckHunter