Rebekah Moore, younger sister to Jessica Moore and student at Stanford University, was rushing up the stairs of the apartment building with a costume bag in her hands for her sister. Well, technically she was rushing up the fire escape outside the building.

After throwing open the window, she stuck her head in and called out, "I made it!"

Jess laughed as she took the bag from her sister as she climbed into the apartment. "We have actual stairs that lead to a door you can walk through, you know?"

"Yeah," she chuckled back. "But where's the fun in that?"

Jess rolled her eyes with a chuckle of her own. "I'm going to get ready, you should do the same."

Rebekah pulled a plastic 'wooden' stake from the inside of her brown leather jacket. "Uh, I am ready. I'm a vampire slayer."

"Oh my god," Jess laughed and went to put on her sexy nurse costume that her sister finally arrived with. "You're just as bad as Sam," she called out from the bedroom as she changed.

"I have a spare stake," Rebekah shouted back as she plopped herself down on the sofa. "We can go as a pair of slayers."

Sam walked into the apartment at that moment and asked, "Who's going as what now?" Rebekah answered that by chucking a plastic stake at his head. He caught it with a confused, "Thanks?"

"It's for your costume, dummy," she laughed and wiggled her own in her hand. "Or lack thereof."

"I'm not dressing up, Bex," he replied, setting the plastic stake down on the coffee table in front of Rebekah, who was called Bex more often than not.

"Neither am I, but with the stake I'm a vampire slayer," she deliberately talked in a slow manner so he wouldn't miss a word. "Loophole!"

Sam narrowed his eyes at her and was just about to say something back when Jess joined them in costume while adjusting her earrings. "Play nice you two or I'll send you to separate corners again."

Rebekah grinned at her sister in an impish manner. "Are you going to spank Sam while you're at it? He seems like the kind of guy that'd like that."

Jess and Sam both reacted to this by grabbing the throw pillows off the sofa and whacking her with them.

Rebekah was laughing so hard because of this that she couldn't even defend herself.

Rebekah joined Jess and Sam to the Halloween party at the local bar, even though she wasn't a big fan of the holiday herself. "Are you sure Jess is the one you're dating," their friend Mike joked before taking a swig of beer. "You and Bex seem to be more alike."

"Oh shut up," Bex shot back, hitting the bottom of his bottle so he'd spill it – which he did. "Just because Sam and I both don't like Halloween, doesn't mean we're a match made in heaven." She looked over at Sam and shuddered. "Ugh, he's like my brother."

"If Sam ever proposes to your sister, then he will be," Mike continued to tease.

Jess was going to nip that conversation right in the bud, so she lifted her shot glass to say, "I propose a toast to Sam and his latest LSAT victory."

Sam, grateful for the segue, focused on this topic of conversation. "It's not that big a deal."

As Jess and the others clinked glasses with him, she said, "He acts so humble but scored a 174."

"And yet Elle Woods scored a 179," Bex teased with a grin.

"Well, yeah, that's because it's Elle Woods," Sam replied in a jokingly serious tone then added a bit dramatically, "I can't even compare."

Their little group got a big laugh at that, Bex even almost had a spit-take moment because of it.

"Well," Mike said as he sat next to Bex, "Elle Woods or not, you're still first draft pick. You can get into any Law School you want."

Sam smiled. "Actually, I got an interview here Monday. If it goes okay, I think I got a shot at a full ride next year."

Jess smiled her reassuring smile his way. "Hey, it's gonna go great."

Sam chuckled lightheartedly. "It better."

"Sam, one ten to another, how does it feel to be the golden boy in your family?" Bex asked, and grinned at Jess' look from it.

"Excuse me, I'm an eleven," he joked back, "And they don't know."

"Whaaaaat?" Mike asked in a drawn out hight pitched voice. "I would be gloating! Why not?"

"Because we're not exactly the Bradys," Sam replied, throwing one of the bar nuts at him.

"I'm not exactly the Huxtables." Mike threw some nuts back. "More shots?"

"Yes, please," Bex answered more animatedly than intended, where Jess and Sam both declined the offer of more shots.

"You just barely turned twenty-one, Bex," Jess pointed out. "Might want to slow it down a bit."

"Oh please," she replied with a 'pfft' tone. "I've had tastes of alcohol long before my 21st birthday." When she realized she had admitted that, she smiled innocently. "You weren't supposed to know that."

"Too late," Jess answered, narrowing her eyes at her sister before laughing.

Jess, turning her attention back to her boyfriend, smiled. "Sam, I am seriously proud of you and you are going to knock them dead on Monday. You're going to get that full ride, I know it."

Sam smiled lovingly at her. "What would I do without you?"

Jess looked as if she was pondering this for a moment before saying, "Hmm…crash and burn." She then smiled and pulled Sam in for a kiss.

Bex made a gagging sound. "Uckth, get a room."

After breaking off their kiss, Sam and Jess both threw some nuts at her.

"Sibling abuse," she shouted with laughed. "I'm being assaulted by nuts!" Bex paused after hearing herself say that. "Okay, that sound way better in my head."

Jess shook her head and laughed at her sister once again before asking, "Has your roommate let you back into your dorm yet or do you need to crash at our place again?"

Before Bex could answer, Sam asked, "What exactly did you do to your roommate again?"

Jess answered for her. "Her roommate wouldn't stop snoring so she made her think the room was haunted so she'd be too scared to sleep."

Sam's mouth gaped open a bit at that. "Seriously?"

Bex nodded. "It took her a week before she realized that I was behind it. And then she locked me out. Luckily for me she's too embarrassed about the situation to actually report me. So, yes, she's still pissed so the couch would be a godsend."

"I wouldn't know about that," Sam replied with a knowing look. "It's pretty lumpy."

"Speaking from experience?" Bex asked with laughter.

"Only when he's being naughty," Jess joked.

Without missing a beat, Sam added in, "And here I thought you liked that."

Bex shuddered at the images that instantly went into her mind. "Oh my god, I need bleach for my brain now."

"How about some tequila?" Mike asked as he set the shot glasses down, only hearing that last bit of their conversation.

"Yes, please." Bex lifted the glass with a, "Through the teeth and over the gums, look out stomach, here it comes." After a 'cheers' of unison they all downed their shots and continued to enjoy the party and the company.

Sam was right, the couch was pretty lumpy, but Bex already knew that. It wasn't the first time she'd slept on the thing after all. If only she had made it to the couch. Since she'd far more to drink than she should have, she ended up spending most of the night in the bathroom. Jess was no help because she wanted to teach Bex a lesson and at that moment Bex felt like the lesson was learned.

Thankfully her long, blonde hair had been tied up in a bun on the top of her head so there was no risk of getting puke in her hair. All she had to worry about was her mouth. Just to mess with Sam, she used his toothbrush to brush her teeth. Bex had just finished this, pretty amazed that she stayed conscious long enough to do it, when she thought she heard something.

Bex half wondered if she had imagined it but since she had to go out to the living room to get to the couch anyway, she might as well take a look. She didn't look very formidable in her TMNT shorts and tank top pajama set with her fuzzy socks, but her 5' 6" self had been taking self-defense classes for awhile now and could most definitely hold her own.

She was about to turn into the living room when she felt a hand touch her shoulder from behind. Going straight into fight mode, she whipped around and punched whoever it was. At least she tried to. Sam, the owner of the hand, dodged it before she could make impact.

"Fight instead of flight, I'll remember that," he whispered then said, "Stay here."

Bex scoffed incredulously because he told her to stay put and for a moment or two, she did, but after hearing another crash, she went into the living room to find Sam hand-to-hand fighting some other guy. She was about to do…something when Not-Sam pinned Sam to the floor and said, "Whoa, easy there, tiger."

And Sam replied with, "Dean?"

Now Bex really had no idea what to do because they clearly knew each other and yet they were fighting. Finally, she said, "Do you guys want some Jello or chocolate pudding or something?"

Dean looked over at her with a grin when she said that, giving Sam an opening to get the upper hand and pinning Dean to the floor before getting up. "Please go to bed," Sam said to her, not wanting her near whatever this was about to turn into with his brother.

Bex shrugged, "Okay," she walked forward, squeezed her way through the brothers with a drawn out, "Excuuuuse me," and lounged herself on the couch with a smug grin.

Sam realized the error in his words as soon as she did that and since it was clear she wasn't going anywhere, he just came right out and asked Dean – who was clearly checking Bex out – "What are you doing here?"

"Well, I was looking for a beer," Dean answered, not taking his eyes off Bex, still grinning.

Jess joined them at that moment and turned on the living room light. "Sam? What's going on out here?"

Bex got off the couch and went over to her sister, "I think they're related. They were wrestling, and not in the horizontal hula way."

Jess glared at her and Dean chuckled. Sam took a breath before making introductions. "Dean, this is my girlfriend Jessica and her sister Rebekah."

"Wait, your brother Dean?" Jess asked him and Bex chimed in with, "I knew they had to be related!"

Dean getting the introductions mixed up, went over to Bex saying, "I love the Ninja Turtles," with a flirty grin. "And I have got to say, that you are way out of my brother's league."

"Just as I am out of yours," Bex smirked back. "FYI, I'm Rebekah, that's Jessica." She gestured to herself and her sister in turn.

Dean looked mighty pleased to hear that. "Good to know. For another time, of course. Right now I need to borrow your sister's boyfriend here and discuss some private family matters." He went over to his brother as he said this. "But it was really nice meeting, you."

"No," Sam interjected and went to go stand with Jess. "No, whatever you want to say, you can say it in front of them."

"Okay," Dean replied. "Um, Dad hasn't been home in a few days."

Sam wasn't too phased by this. "So he's working overtime on a 'Miller Time' shift. He'll stumble back in sooner or later."

Dean looked down for a moment and changed his wording. "Dad's on a hunting trip, and he hasn't been home in a few days."

Bex looked between Dean and Sam when he said that and saw the change of expression on Sam's face. Now that resonated with him.

Sam was silent for a moment before saying, "Jess, Bex, excuse us."

"What do you think that was all about?" Bex asked as she handed Jess a cup of coffee since the odds of them getting any sleep now was nil.

"I don't know anything about his family, so I have no idea," Jess sighed before taking a drink.

"That seems kinda unfair, don't you think?" Bex asked as she sat at the kitchen table and pulled one of her legs onto the chair with her. "I mean, Sam knows just about everything about us, right? Where our sister stuff is concerned, you know?"

Jess shrugged a bit. "Yeah, but every family is different."

Bex smiled a bit day-dreamily. "Dean is pretty hot."

Jess rolled her eyes at that. "You think any guy with a pulse is hot."

"Did you just call me a slut?" Bex asked with a raised brow.

"No," Jess countered, "if I said that you slept with every guy with a pulse then I'd be calling you a slut. You just haven't crossed that threshold yet."

Bex set her coffee cup down with a scoff. "I have had sex, thank you very much. You're making me sound like a prude."

Jess almost had a spit-take moment. "You get upset when you think I call you a slut and you get upset when you think I call you a prude? Make up your mind, sister."

Bex's only reaction to that was wadding up a paper napkin and pelting it at her big sister.

It wasn't long after their conversation that Sam came back into the apartment and went straight to packing. Jess and Bex exchanged questioning looks with each other before going to ask him what was up.

"Wait, so you're taking off?" Jess asked from the bedroom's doorway. "Is this about your dad? Is he alright."

Sam acted like it was nothing. "Yeah. You know, just a little family drama."

"Typical family drama doesn't usually consist of mysterious brothers showing up in the middle of the night," Bex pointed out. "Usually a phone call suffices."

Jess sat on the bed as she said, "Your brother said he was on some kind of hunting trip?"

Sam was at the dresser grabbing some things as he answered. "Ah, yeah, he's just deer hunting up at the cabin, and he's probably got Jim, Jack, and Jose along with him."

"Awwww," Bex joked as she leaned against the doorway, "my three favorite men."

"Am I going to have to worry about you while I'm gone?" Sam was protective of Bex because she was Jess's little sister and all.

"I'm just joking around, Sam," Bex assured. "And I'm half asleep here so I most likely won't even remember what I've been saying in the morning."

Jess stayed focused on Sam. "What about your interview on Monday?"

"I'll make the interview," he assured with a smile. "This is only for a couple of days."

Bex caught the look on her sister's face telling her to leave so she could talk to Sam, so she did just that. With a "Have a nice trip," she saluted Sam and went back to the couch in the living room to make any sort of attempt to get some sleep.

Bex herself spent pretty much the entire weekend just hanging out with Jess. They got in some serious sister bonding time and when Sunday night rolled around, they baked cookies – something that hadn't done together since they were kids.

Jess was presently pulling the last cookie sheet from the oven as Bex sat on the counter eating one of the cooled cookies, saying "Sam better realize how lucky he is to have you. I mean, I'm insanely lucky to have gotten stuck with you as a sister but to actually want to be with Sam, who other level."

Jess looked at her oddly. "I think that was a compliment."

"Maybe a backhanded on," Bex teased with a grin and hopped off the counter. "You're out of milk so I'm gonna go pick some up."

"You must really be thirsty if you're the one offering to do the shopping," Jess teased.

"Well, duh." Bex gave her sister a wink before plucking Jess's keys from the counter with a "Love you!" called out over her shoulder. She had no idea why she came out with that in the moment, but felt like she should say it.

Jess smiled and called back, "Love you, too!" before getting back to the cookies.

Bex wasn't gone long when she got back to the apartment with the milk. "Anybody home?" she called out as she put the milk away.

"Bedroom," Sam replied, from said room.

"I'm not about to walk into anything kinky, am I?" Bex laughed as she walked into the room only to scream like she had never screamed before because Jess's body was pinned to the ceiling and had ignited into flames engulfing the entire room. "Jess!" she screamed out and tried to get onto the bed to get to her but the next thing she knew, Dean was grabbing hold of her and dragging her out of the room. Apparently he had already done the same to Sam, because he wasn't there, but Bex hadn't seen this. All she saw was her sister.

"Jess!" she screamed as Dean forcibly got her out of the apartment. She couldn't accept what she had just seen, she just couldn't.

Bex couldn't tell you how she had got outside, standing next to a black Impala, if she was asked. All she kept seeing was the image of Jess over and over in her mind.

There were emergency vehicles around at this point and they had gotten the fire out, but Bex wasn't tuned into any of it. She was still in a state of shock. Finally, she turned to Sam and Dean to say with a broken voice, "That wasn't normal. She…she shouldn't have died like that. Why…why did she die like that?"

Dean looked at his brother in a 'don't do it' way but Sam ignored it and answered her with the truth. "It was a demon."

Bex scoffed a disbelieving chuckle. "Is this the part where you tell me all the stories are true?" Even with her grief, she still managed to crack a joke. When she saw the serious looks on their faces she was in just enough shock to believe him. "A demon?" she asked after swallowing a lump in her throat.

Sam and Dean both nodded in reply and Dean added in, "There's a lot you need to know."

Bex wiped away her tears and walked over to the brothers saying with complete seriousness. "Then tell me."

Sam looked from Bex to his brother to say, "We got work to do."

End Season 1 Episode 1