437Growing up, Winchester Style » by Jenmm31 My take on what it would be like if Dean and Sam had a younger sister, Katie, and all the ups and downs they encounter growing up. Each chapter will be a one shot of some moments when the Winchester siblings were younger (before the series).
Supernatural, K+, English, chapters: 56, words: 202k+, favs: 291, follows: 273, updated: 8/7 published: 1/22/2013, Dean W., Sam W.
495Emily Anne » by WinchestersWorld4 This is the story of Emily Anne Winchester. The little sister of Sam & Dean. The story explores how the dynamics of the show could change if a sister had been thrown into the mix. Emily is brave like Dean, intuitive like Sam, but has they eyes and temper of her daddy John. The story follows the show but has original bits as well.
Supernatural, M, English, chapters: 94, words: 820k+, favs: 398, follows: 397, updated: 7/11 published: 7/26/2015, Sam W., Dean W., OC
9Love in the Line of Duty » by StellaBelle24 One night Detective Caitlin Reagan lost her fiance, now three years later, the last thing on her mind is finding love again. Then when she has car trouble, she meets Detective Ben Wallace, tall, brooding, and dealing with his own issues. When the two are thrown together during an undercover operation, they start to fall for each other. Rated T for now, might become M later on.
Blue Bloods, T, English, chapters: 3, words: 5k+, favs: 13, follows: 14, updated: 7/3 published: 3/15, OC
25One More Winchester » by Kineret G Alexis Winchester is the unknown baby sister of Sam and Dean. She is not aware to the "family busyness"; she only knows that her father's name is John and that she has two older brothers that know nothing about her existences. (Full summary inside).
Supernatural, T, English, Supernatural & Romance, chapters: 21, words: 18k+, favs: 87, follows: 95, updated: 6/23 published: 9/21/2015, [Castiel, OC]
216Long Road to Family » by ChiTown4ever Kate Reagan disappeared and made sure no one could find her after losing her brother Joe. But an encounter with Joe Hill brings them both back to the family she had left behind, and the one he had never met.
Blue Bloods, T, English, Family & Hurt/Comfort, chapters: 28, words: 54k+, favs: 109, follows: 121, updated: 3/23 published: 8/1/2020
16 Emilia » by SamA3642 AU. Will and Jay Halstead are both highly dedicated to their careers. They hadn't seen or heard from their father in years, they hadn't parted on the best of terms. When their father goes to prison it's up to them to care for their new sister they didn't know about while juggling their own lives and careers
Chicago PD & Chicago Med, T, English, Family, chapters: 9, words: 15k+, favs: 46, follows: 58, updated: 3/15 published: 12/9/2020, J. Halstead, OC, Will H.
333My Twist to the Winchester Tale » by ispiltthemilk Sam and Dean Winchester have got a younger sister who gives it to you like she sees it through her eyes and feelings of the series. It's her turn to share the story and she's telling it all through her crazy point of view.
Supernatural, T, English, chapters: 57, words: 434k+, favs: 268, follows: 245, updated: 11/2/2021 published: 1/11/2013, Sam W., Dean W., OC
5k+ Song Remains the Same » by R. W. Winters For Alex Winchester, normal has never been in the equation. Mute since the nursery fire, she grew up on the road chasing ghosts with her brothers and father. When her voice is inexplicably restored and the angel Castiel appears claiming to be her guardian, both of their lives change forever in ways that Heaven and Earth never expected. Castiel/OFC. Sisfic - S4-9 - Alternate Ending.
Supernatural, M, English, Romance & Drama, chapters: 156, words: 2220k+, favs: 3k+, follows: 2k+, updated: 11/2/2021 published: 1/11/2013, [Castiel, OC] Sam W., Dean W.
372Alexis Winchester » by Emerald Princess 14 It's a sisfic which deviates a little from series but if you love sisfics, I guarantee you'll like this one. "it shattered my feels like no fanfiction or television show ever has before. You have won the award for best fanfiction, miss. I'm having trouble putting this into words." - Cinderbunp. Check it out, I don't disappoint! Remember to R&R!
Supernatural, M, English, Family & Supernatural, chapters: 37, words: 339k+, favs: 271, follows: 280, updated: 7/20/2021 published: 6/22/2013, Sam W., Dean W.
33 Halstead Sister » by SlytherinPrincess926 What if Jay and Will had a little sister. Takes place almost directly after Season 7. There will be Burgstead, but it will mainly focus on the Halstead Siblings for the most part. #HalsteadSiblings #Burgstead
Chicago PD & Chicago Med, T, English, Family & Crime, chapters: 22, words: 27k+, favs: 53, follows: 52, updated: 6/16/2021 published: 10/3/2020, [J. Halstead, K. Burgess] [OC, Connor R.]
165Ain't Easy in the Big Easy by Ladysunshine6 Sam and Dean Winchester, along with Sam's twin sister, Caitlyn, stumble across a case in New Orleans. The problem is...there are no connections to the murders. What supernatural being could be behind all of this? But during the hunt, Caitlyn finds out things aren't always what they seem. Rated M for smut, torture scene, language. (Sisfic) AU/season 5 (After 5x18 & Possible OC/OC).
Supernatural, M, English, Drama & Supernatural, words: 84, favs: 58, follows: 60, updated: 3/30/2021 published: 10/9/2014
56Finding Gracie » by justanotheronechicagofan Will the Halstead brothers be able to reconnect with their younger sister after 5 years? Set in 2018, a story about family and friendship with sprinkles of upstead.
Chicago PD, T, English, Family & Hurt/Comfort, chapters: 10, words: 16k+, favs: 41, follows: 32, updated: 1/4/2021 published: 9/4/2020, J. Halstead, OC, H. Upton, Will H.
41Unknown Daughter » by razmend What if, Frank made a mistake. What if he cheated on his wife sixteen years before the show started. What if he didn't know that mistake was about to pop back up in his life in the form of a sixteen year old runaway.
Blue Bloods, K, English, Family & Crime, chapters: 7, words: 15k+, favs: 45, follows: 60, updated: 12/5/2020 published: 9/30/2017
188The Road Home » by ChiTown4ever Jay and Will Halstead didn't know their sister was back. When Jay finds out what she's going through, he knows it's all his fault. What he doesn't know is how to help her. But there are a couple of guys in the Intelligence Unit willing to try...if Jay doesn't kill them first.
Chicago PD, T, English, Hurt/Comfort & Romance, chapters: 50, words: 93k+, favs: 239, follows: 279, updated: 11/23/2020 published: 6/26/2017, J. Halstead, A. Ruzek, OC, Greg G./Mouse
73The Girl Who Changed Everything » by ManyAFandom1995 Sam and Dean may be forced to take on a young girl, but not just any young girl, their 14 year old sister. They have only met her a handful of times. Will they be able to handle it? "Look, Clair, we love you. But you can't come with us. And it's because I love you that I'm telling you this. Our life is not a place for a kid." I suck at Summaries. Take place in a kind of A/U
Supernatural, T, English, Family & Supernatural, chapters: 38, words: 69k+, favs: 44, follows: 45, updated: 11/4/2020 published: 9/5/2015, Sam W., Dean W.
5 The Third Halstead » by KateSmith21 Will and Jay have a sister who they reconnect with after a while apart.
Chicago PD & Chicago Med, K, English, chapters: 9, words: 9k+, favs: 16, follows: 18, updated: 6/20/2020 published: 3/15/2020, J. Halstead, Will H.
93 Hannah Winchester » by SPNDaz238 My first fanfic. This is a Sisfic. So don't like, don't read. Sam and Dean's little sister gets sick during a hunt. What the boys don't know is this is not just an ordinary sickness. Part 1 of my (soon to be) series.
Supernatural, T, English, Hurt/Comfort, chapters: 9, words: 14k+, favs: 102, follows: 95, updated: 4/13/2020 published: 5/15/2008, Sam W., Dean W., OC
20Carry on Winchester Girl » by SassyMcWinchester A soul was picked up one night in 1983. Years later, Sam and Dean are faced with a girl who claims to be their sister. Everything matches when it comes to DNA, but how? Could this be the work of demons? Or maybe of Heaven? This is the story of a Winchester girl who's imagined a life with a real family. Supernatural is written owned by Eric Kripke, I own nothing but my characters.
Supernatural, M, English, Supernatural & Adventure, chapters: 17, words: 165k+, favs: 41, follows: 47, updated: 4/6/2020 published: 11/10/2013, Sam W., Dean W., John W.
18Glowing Eyes » by ForgottenSorcerer SIS FIC. Skylar Winchester gets into an incident and her brothers bring her back in the life of hunting, strange things happen from there on out. More than usual. 《LEMON》
Supernatural, M, English, Angst & Supernatural, chapters: 18, words: 23k+, favs: 12, follows: 15, updated: 2/25/2020 published: 8/14/2016, Sam W., Dean W., Castiel, Lucifer
48Our Guardian Angel » by MidnightBlackHeart The Impala, the two Winchesters, and the road. What would the story be like with their youngest sister? This is the story of Lexi, Sam, and Dean facing their life together. Sister-fic. Read how they protect and love each other. Starts from Season 1. On Hiatus.
Supernatural, T, English, Supernatural & Family, chapters: 7, words: 84k+, favs: 108, follows: 113, updated: 2/17/2020 published: 7/30/2011, Sam W., Dean W.