Starts after 3x14. Just as Casey takes Severide's advice and begins to try to move on, an accident leaves Gabby fighting for her life, forcing Matt to make a decision about what he really wants, but is it too late? Does Gabby even want to return to the life she's been living? How will her loved ones cope?

It's been a long time coming for them. First welcoming Louie and then facing the reality of quite possibly losing him. How do they pick up the pieces and move on?

Spoilers from 'Kind of a Crazy Idea.' A/U after the living room scene between Matt and Gabby. It's one decision after another for Matt and Gabby.

Ramon Dawson told his son that he should have left his wife 30 years ago. Antonio did the math and decided not to tell Gabby. What exactly did it all mean? For 30 years Ramon and Camila Dawson have been keeping a secret with the potential to devastate their daughter. Now it's time for the truth to come out.

A/U. Gabby Dawson and Matt Casey meet under different circumstances. With raising two boys on her own, the last thing Gabby needs is to fall into a serious relationship. Will Lieutenant Matt Casey convince her that it's ok to let your guard down for the right person?

The space was suppose to bring them back together better than ever. Not pull them apart further and lead him into the arms of another. She doesn't know why she ever suggested it. All she knows now is she's alone and he's apparently making out with other girls on the apparatus floor. She's not sure how she's going to do this all on her own. She's having his child and he's moving on.

8 years. An accidental run in. A love so deep and pure neither could ever shake it. Lies and secrets. Love and loss. They had never imagined the mess they would tangle themselves up in. Somewhere along the line they became a bunch of chances missed and opportunities never taken... They both still love each other, never stopped, now they just have to tell the truth. Dawsey. AU.

Christmas 2017. Things are merry and bright for Dawson and Casey. For their fifth Christmas as a couple, they are hoping that Santa will deliver their most cherished gift on time.

A Dawsey Christmas two-part. It's mushy and full of happiness. Christmas is all about family. Well, here's the Casey/Dawson family celebrating the holiday.

Matt knows Gabby is struggling after the loss of their baby, but she won't let him in. For two years, the secret guilt she had been feeling had been weighing her down. Forced to come clean in an attempt to save another life, the flood gates open.

Gabriela Dawson moves back home to Chicago after four years into her old friends' apartment, Kelly and Shay, along with the fourth roommate, Matthew Casey. Both are looking for fun and no relationships, so when they come to hate each other they think that feelings won't get in the way, right? But this is reality and it's never that simple. Rating M for sexual scenes & curse words.

If things were different there would be a ring on her finger and she would be laughing and smiling talking about plans for their up and coming wedding, but things weren't different and that horrifying day had happened. A month later it was still holding one of their lives in the balance. How will 51 deal with the aftermath of that faithful day. Post Season 2 Finale.

AU from season two episode "A Dark Day." Gabby ends up with more than just a few scratches-physically and emotionally. Turning this story into a mult-chapter. Will Gabby be able to overcome her injuries? Casey/Dawson Lots of Antonio/Gabby sibling interaction.