The Crüe (AU)(SPN/The Dirt Crossover)
34 parts Complete Mature(This story is kind of a Supernatural crossover with the Mötley Crüe movie, "The Dirt.")
Scarlet Rose Winchester is the youngest Winchester. Though she wasn't Dean's twin, it was almost as if she was when it came to her interests and tastes in food, music, movies, etc. She was smart like Sam, which was something the boys praised. Dean especially liked it, since she stayed behind when Sam went to Stanford. She was able to help Dean with hunts, like Sam would later on in the years.
Scarlet was known for being a daring and adventurous person, with a short fuse and an attitude to match. She could be fun though, and that was something everyone enjoyed about her. She was the funniest person when she was drunk, and there were quite a few videos of her to prove it. But videos seemed to be the only thing the Winchester boys had left of their sister, after a hunt went wrong with a witch and dark magic.
While on a hunt, Scarlet was trapped in a room by the witch. The witch had sealed the room shut with her magic, and appeared from the closet to scare Scarlet. She used very dark magic to send Scarlet back in time, the only problem was, Sam and Dean had no idea where she was or what time she was sent to.
The boys spend their free time trying to save their sister, as Scarlet tries to find her way home. She has to figure out how to get back, but that didn't mean she couldn't have a friendship during that time. She just couldn't fall in love, she was too young for love...