Lexi Shay (Leslie Shay's twin sister), a Detective in the Intelligence Unit, deals with her sister's death, the end of her relationship with Severide and her budding relationship with her partner Halstead. What happens when she finds out she's the reason for her sisters death? How will she cope? How is an old case she worked involved? Jay/OC, Kelly/OC. Cameos of characters from Chicago PD and Chicago Fire. Note: Lindsey doesn't exist. Burgess is a Police Officer within the intelligence unit.

Ever since Blake was adopted by Benny Severide, and became inseparable with Kelly, she always wanted to be a firefighter. Just like her brother. Recruited straight to Firehouse 51, and onto the same truck as Kelly, life was pretty good. Being the second in command to her brother, she went through the same hardships Kelly did, never leaving his side. Only Blake Severide's life gets a lot more hectic when Intelligence gets involved. Especially when she falls for the former Army Ranger.

Harley Jacobs was the newest detective to join Hank Voight's Intelligence Unit. She's a smart, sexy, and badass cop who's not afraid to get her hands dirty. So when she meets her new partner, Detective Jay Halstead it's a match made in heaven. Will they work well together or will things get out of hand? Warning: crimes, mentions of assault, possible triggers, and SMUT!!!

"I really don't know about this" Heather muttered as the two girls walked into the bar. "Come on it will take your mind off things" Erin smiled at Heather draping her arm over her shoulder "and you never know someone might catch your eye" "Erin you know I'm not ready to meet anyone. I'm just focusing on me and summer and trying to get back into work" Heather sighed. "Just try and let your hair down just for a couple of hours" she said passing Heather a beer. "I can try but I can't promise I won't put a downer on things. Not with how I'm feeling" Heather muttered as she downed the bottle. "Gimme a whiskey, hold the ice and make it a triple" --- Heather Jamison had been through hell over the last year and still hadn't regained control yet. There was a dark cloud looming over her and as fast as she tried she couldn't seem to get her head above water whilst trying to make sure her daughter had everything she needed to live a normal life. What will happen when she meets Adam Ruzek? Will he managed to break through the walls Heather has built.

Mikayla Halstead, the youngest Halstead sibling, had gone through a lot in her short life. She lost her mother when she was just 20 years old, Will had ran off to live the party life of a plastic surgeon, and Jay was suffering from PTSD after being medically discharged from the Army. She was the youngest, but she was the rock of the family. Now Mikayla is a detective in Hank Voight's Intelligence Unit along with her big brother, Jay Halstead. Mikayla had always been close with her big brother... until she began secretly dating her partner, Adam Ruzek. Not only was it against Voight's rules, but Adam was one of Jay's friends and Kim's ex-fiancé. When an explosion lands one of the detectives in the hospital, their secret is ultimately revealed. Will their relationship be able to withstand the emotional turmoil of a pissed off boss and overprotective brothers? Or will they crash and burn? Mikayla just knows one thing: she's in love with Adam Ruzek.