Ultimately I'm giving Dean the love interest I think he should have. I know not everyone enjoys those types of stories when it comes to Sam and Dean but this is something I have created and those who enjoy it I would really love your feedback!
Chapter 1: Separate Ways
The Impala idles at a truck stop parking lot. Sam and Dean eating another greasy meal from the drive thru down the road. Hunting shapeshifters was hungry work and they'd been awake over 16 hours at this point going from one truck stop to the next. There had been several reported missing females in the last few weeks, all from truck stops and all throughout the night. The suspects left their shredded skin behind, and the disappearances didn't seem to be slowing down.
Sam and Dean had eyes on a group of men they suspected to be shapeshifters stood outside the rest room for the last 40 minutes.
"I'm telling you" Dean said between bites of his burger "those three men are too shifty to just be regular truckers".
It was only when a lone female walked around the corner and into the same restroom followed by the three truckers, that Sam and Dean grabbed their weapons and exited the Impala.
"Yeah, that's not normal" Sam stated.
"Agreed, let's go".
The two of them reached the rest room and cautiously opened the door, Deans gun raised. The smell of blood hit them immediately, metallic and sharp. The restroom is chaos, and the three shapeshifters lie on the floor headless, their distorted shifting features half revealed.
Dean looks around "well, that's messy".
Sam kneels next to them inspecting the bodies "silver wounds, someone got to them first".
As they examined the bodies a shadow moved above them. Suddenly the lone female drops down from a ledge, landing with precision. She kicks Deans gun out of his hand, knocking him backwards into the wall.
"What the fu…" Dean stumbles back.
Before Sam can react, the female spins and slams her palm against his wrist, disarming him. Sam throws a punch but the female ducks smoothly, grabbing his arm and twisting it behind his back. She shoves him into the sinks, cracking the mirror.
"Who the hell are you and why are you following me?" She asks.
Dean recovers quickly, pulling a knife from his boot. He lunges at the female, but she sidesteps him, grabs his arm and uses his momentum to flip him onto the floor.
Dean grits his teeth as the wind leaves him "that's it!".
He sweeps her legs and the female crashes to the ground but rolls to her feet in one fluid motion. Sam charges for her but she dodges, grabbing his jacket and slamming him into a stall door, breaking off its hinges with the impact.
Dean lunges again, this time managing to pin the female against the wall. She struggles, her knee coming up to strike him, but he holds her firm.
Dean struggles to catch his breath "we are … not … shapeshifters okay!?".
She hesitates then glances at Sam as he pulls himself to his feet.
"He's telling the truth" Sam pants.
She eyes them both warily before relaxing slightly. Dean steps back, keeping a cautious distance "mind telling us who you are and why you just kicked our asses?"
The female slots her knife back into the side of her pants "Annie" she states "Hunter. I know you're the Winchesters. I've been trying to track these shifters for a week".
Sam rubs his shoulder "and your first instinct was to ambush us?"
"You followed me in here" Annie keeps eye contact with Dean who hadn't looked away from her yet "thought you were one of them". Annie picks up her gun from the floor and holsters it. She turns to grab her jacket from the corner of the room and begins to make her exit.
"Woah woah wait, you're not just leaving after playing WWE with us" Dean shouts after her.
"I work alone if you hadn't of realised" Annie carries on walking out the restroom and back across the parking lot. Sam and Dean follow her. Annie stops and turns "look I've got a lot more of these to kill, so nice meeting you and good luck with whatever your fighting". Annie nods at the brothers and continues to walk away.
Dean grabs her arm "you're not leaving, we have questions".
Annie turns back around with fire in her eyes, she looks at Deans hand around her wrist "I'd remove your grip if I was you".
Sam steps between them "what my brother means is, its late, you're injured and now so are we. We have a place not far from here, why don't you rest up, we can discuss shapeshifters in the morning then you can leave".
Annie scoffs "no thank you, I've heard enough stories about you both and that's all I need, but good luck in whatever you're doing" she snatches her arm out of Deans clutch and spins on her heels.
Sam and Dean watch her go whilst nursing their injuries and egos.