Hey, Fanfic Friends! I am sorry I have decided to take a hiatus from my current Gravity Falls Fanfic, but an inspiration for a new story hit me and I couldn't wait to start it. This story takes place in an AU where Dipper and Mabel's parents have died and so they are living in Gravity Falls full time, only in this AU I decided to go for the full canon and include Ford! I have to give you guys fair warning that this will be my most mature story in terms of themes so viewer discretion is advised, and as always feedback is appreciated! Thank you, and enjoy!

Stan Pines was a man who never considered himself very skilled in many areas of life, but he did have a deep pride for his street smart ways. He often thought that were his twin brother Ford was gifted in the ways of book smarts, he had the kind of smarts that could only be gained from years of hard living.

He and Mabel were winding down a slow late autumn day at the Mystery Shack. Soos and Wendy had already left for the day, and Dipper and Ford were out on an overnight scientific excursion. Stan didn't mind, he always enjoyed the time he got to spend with his niece. He liked to think that while Ford and Dipper shared a clear bond over science, he and Mabel shared a bond as the "spirited twins" of the family.

Mabel felt slightly more melancholy about the situation than her Grunkle. She loved her Grunkle more than just about anything else in the world, but she would be lying if she didn't admit that sometimes the green eyed monster of envy didn't take over her emotions when Dipper and Ford bonded over science. Mabel didn't like science, but she did have a deep desire to feel valued, and sometimes the world seemed to place a higher value on those with more traditionally scientific minds. Despite Stan's best attempts to cheer her up, she was still feeling a bit depressed when suddenly he walked in.

He was a tall, tan, and handsome young man. He looked to be a little older than Wendy, though not by much. Stan would place his age at about seventeen or eighteen, and he was taking an odd fascination with Stan's way too young niece.

At first, Stan didn't say anything, and just watched him intently. He appeared innocent enough, but Stan still had a bad feeling in his gut.

It was no secret to anyone in Gravity Falls that Mabel was one of the friendliest people you would ever meet, but sometimes Stan worried that it could be a downfall if Mabel ever met the type of person who would take advantage of that kind and caring heart. Stan considered it one of his most sacred privileges as her guardian to make sure that would never happen.

The conversation between the boy and Mabel started innocently enough. They exchanged names and basic info, it turned out this guys name was Brad and he was a Senior at the local high school. Mabel explained how she lived here with her Great Uncles and twin brother since their parents passing. Brad seemed to be offering a sympathetic and listening ear as Mabel explained how her brother and other Great Uncle traveled a lot to study the supernatural since they were "really smart and sciency"

Brad smiled as he leaned closer to her, "well for what it's worth I think you seem pretty smart". When he reached to touch her hand Stan had officially had enough of him, "alright, shack's closed...either buy something or get out, better yet come back tomorrow and buy something," Stan said as he ushered Brad towards the door.

"Don't be rude Grunkle Stan," Mabel protested as Stan slammed the door on Brad and proceeded to glare at him as he left the property. "What was that about Grunkle Stan?" Mabel asked gently.

Stan didn't want to worry the girl, after all, he was probably just being paranoid. "I just don't like seeing guys like that around this place. Gives the place bad publicity, besides you aren't allowed to date boys until your married remember?" Stan gave the girl a playful grin as he ruffled her hair.

"if I didn't know better I'd say that you cared Grunkle Stan" Mabel smiled as she headed out of the shop portion of the shack. "Well, it's a good thing you know better!" Stan quipped back following her.

The whole thing was quickly forgotten about as Stan and Mabel enjoyed an evening of playing cards and watching duck-tective. Later that night Stan tucked her into bed, a tradition he started soon after the twins parents died. He figured it would add a bit of a personal touch to their admittedly odd family dynamic, "Goodnight pumpkin" Stan said as he gave her a raspberry kiss on the cheek causing her to giggle in that classic Mabel way.

Mabel was nearly fast asleep when she suddenly heard the vague sound of footsteps coming towards her. "Grunkle Stan?" she whispered slightly confused and out of it when suddenly she felt a firm hand over her mouth. She looked up to see Brad leaning over her bed with his hand to her mouth. At first, she thought she was in the middle of an awful dream until Brad pulled a knife from his pocket and held it against her forehead.

Mabel began to make muffled screaming sounds before Brad placed a gag over her mouth and used his newly freed hand to slap her across the face, "shut up or I kill you and the old man understand?"

Mabel's eyes began to widen and fill with tears as Brad reached up her nightgown to pull her underwear off. She was horrified, but all she could think was this guy killing her Grunkle Stan. She and Dipper couldn't lose another loved one and while it destroyed her she was willing to accept this nightmare if it meant he would be safe.

At that moment Stan was in his room trying to prepare to sleep when something deep inside him stirred him to check on Mabel. Call it paranoia or whatever you want, but he just had to get a peek at her. He expected to find her sleeping peacefully in her bed, but what he found was quite the opposite.

There was that creep Brad on top of his niece with his shirt off holding a knife to her neck, while unzipping his pants. Mabel was tied to the bed and gagged with this look on her face that Stan would never be able to get out of his mind. It was a look that truly said that whatever innocence Mabel once had was now long gone, and that destroyed Stan. The only thought that ran through his mind as he charged Brad was that he wanted to destroy him the same way he had destroyed his little girl.