Be Careful What You Wish For

A/N: This hasn't been done yet, as far as I know, and I don't know why. So, let's just crossover two of my favorite fandoms… Preferably set post season 13 of Supernatural and post season 3 of Lucifer, but can be considered out of canon. This is meant to be fun and kind of silly, so I'm going to take all my ideas and opinions for the shows and put them in here. Aaaaaand here we go!

If you'd told Linda Martin that she'd wind up as the therapist of a whole different world of supernatural beings, she… Would honestly not be overly shocked. Crazy, biblical, and/or world ending patients were kind of her thing after all. She loved her job, loved her patients, their company, their stories. Except for maybe Lucifer; it depended on the day, quite honestly. That's not to say she doesn't consider him a dear friend and would go out of her way to help him with any problem within reason, because she would. It's just that being the Devil's therapist took a toll on her, and sometimes she wished she either didn't have to deal with it 24/7 or that the rest of her patients went through similar crises. If biblical-celestial-demonic issues became normal, she just might retire with her sanity mostly intact. Mostly.

She probably should've been careful what she wished for.

Last night had ended just like any other: she'd come home after a rather long day at work, cooked a small meal for dinner, washed up, checked on the tribe (Chloe, Maze, and Ella), and gone to bed. Her dream that night had consisted of a very, very long vacation out of the office where she didn't have to worry about anything back in LA. Maybe that's where all of this started.

Linda awoke and the first thing she noticed was that she was not in her home. The bed felt wrong, the sun wasn't blinding her as she opened her eyes, and it was quiet, too quiet. Her surroundings didn't tell her much. She was in a sparsely decorated room with no personal belongings of any kind, no sign of residence, and no windows. Her purse and one of her travel bags was set on the floor at the foot of the bed, and she was relieved to find some of her personal belongings as well as some patient files on hand. Okay. So, maybe she was drugged or kidnapped or…? Nope. No explanation was coming to mind. From what she could tell though, she herself was unharmed, exactly how she'd fallen asleep the night before. That was a plus. The most pressing question at the moment, however, was where was she? Was she still in Los Angeles, or was she a state, a country, a continent away? Only one way to find out.

Grabbing the pair of demon knives Maze had insisted she carry with her at all times (she would have to thank her when she got the Hell out of here), she cautiously opened the door to the room, looking both ways across the hall, before picking a direction and going that way. As quietly as she could, she tiptoed through the hall, glancing at the design and strange doors. Pentagrams were carved above the room numbers. Well, she wasn't completely out of her depth at least. She continued on until the smell of food had her making a sharp turn… Right into someone's kitchen, specifically three someone's kitchen.

The first man to react pulled a wicked silver blade out of seemingly nowhere, going from across the room, seated at a table, to barely a foot away from her in the blink of an eye, trench coat flapping in the wind caused by what must have been wings. The other two were quick to pull guns on her the moment their companion appeared in front of her. She immediately had her hands held up in surrender, demon knives held too tightly in her terrified grip.

"I can't even have one cup of coffee. One cup of coffee, Sam! It's too early for this!" complained one of the gunmen, the more rugged looking one with fiery green eyes and a bad boy vibe.

"Dean," who she assumed was Sam began, with those shoulders and gentle hazel eyes. "There's an intruder in the bunker, and your first thought is your caffeine addiction? We don't know what she is or how she got here and-"

"Human! I'm human, I promise," Linda answered quickly. The two looked to the third man in the room.

"Cas?" they asked him. Cas tilted his head at her, seemingly learning her life's story in one look.

"She's human." That voice, and those deep blue eyes... "But something's not right. She doesn't feel… Of this world."

"So she's a doppelganger from the other world?" Dean asked. Cas shook his head.

"Not quite. Look at her state of dress and the weapons in her hands. She's not from the other world we're familiar with."

"Well, if she's here, then she had to get here through a rift. Should we check the bunker for one?" Sam questioned.

"If she's human, how would she know what a rift is, let alone find one?" Dean countered.

"Look, I don't know what a rift is… Or where I am, or how I got here, but I think this is all just one big misunderstanding," Linda stated. "Tell you what, I'll put my knives down, you put your weapons down, and we can all discuss this over breakfast before it gets cold?" she asked hopefully. She placed both demon knives on the floor and kicked them over to Castiel, trusting him. He gave her a perplexed look.

"You're very trusting for an intruder."

"And you're very considerate for an angel." The three's eyes widened at her statement. "In my experience, angels are either gain motivated psychopaths or they just worship God like he does no wrong. There was one exception to that and I'm hoping you could help me find him." Castiel stowed his blade away and gave her a reassuring smile, prompting Sam and Dean to put their guns down as well.

"We just finished cooking breakfast," Castiel told her, gesturing that she should take a seat at the table. She took the seat next to him while the other two sat adjacent to them. Sam fixed her a plate, which she accepted with a thanks before he spoke.

"Sorry for the scare earlier. We kind of have to live paranoid to survive around here. I'm Sam Winchester and that's my brother." He and Dean began fixing plates while Cas poured everyone drinks.

"I'm Dean Winchester. Welcome to our… Humble abode, I guess," he greeted, trying to seem welcoming, but Linda saw through the facade. Suspicious, not trusting, worried, alert.

"And I'm Castiel. As you said earlier, I'm an angel. Sam and Dean are humans and what this world calls hunters. They hunt and kill any supernatural creatures or beings that pose a threat to people throughout the United States. I assist them in whatever way I can."

"Sounds exciting," Linda replied. They ate for a few minutes before she introduced herself. "Well, I'm Dr. Linda Martin. I'm a therapist in Los Angeles who takes cases from divorced spouses to primordial beings."

"You're from LA?" Dean asked incredulously.

"Yes. Why? Where are we?" she asked, afraid of the answer she'd receive. Sam answered with an apologetic face.

"Lebanon, Kansas." She let that sink in before calmly taking her head into her hands with a deep breath. She's calm. She's not freaking out that she's halfway across the country right now, in another universe supposedly. Calm.

"Kansas… Okay. I'm in Kansas. And… What day is it?"

"June 10th." Only a few hours had passed since she'd gone to sleep late last night. That wasn't enough time to drive her here, and she couldn't have gotten on a plane in her sleep.

"You mentioned primordial beings. Angels?" Castiel inquired. She nodded with a mouthful of bacon. "Any angels specifically that jump to mind?"

"One in particular, actually," she replied after swallowing. "Lucifer. Morningstar. The actual Devil."

"Um!" Dean exclaimed as she said that, he Sam, and Castiel now on high alert. "Blonde, a general pain in the ass, mass murderer, likes to explode things?"

"Blonde? No. Pain in the ass? Yes, most definitely. Definitely not a mass murderer, and I don't even know if he can do that," she answered them.

"American accent?" Castiel asked instead.

"No, British actually. And instead of killing people and being one of the things you hunt, my Lucifer is actually a part of the LAPD as a consultant. He's actually very good at his job." She took in their concerned faces and began to wonder if she should've just stayed in her room. Dean sighed, putting everyone's plates in the sink before addressing Linda.

"Well, looks like we've got a lot to talk about, Doc."

Closing A/N: I'll mark this as a two-shot for now until I have time to add more, if I decide to make this a fully fledged fic. Next chapter, meeting the rest of everyone's crew on more neutral ground: Lucifer-verse meets Supernatural-verse.