A/N: Welcome to my new story! I've literally not slept the entire night (it's 6am now) so please excuse any spelling mistakes but I was so excited to get this out :)

Enjoy!

A lot can happen in three years. For Erin Lindsay, a lot of the things that happened since moving to New York were good. The fresh start was exactly what she had needed, to be free from her past and her mother.

For Jay Halstead, time seemed to have frozen since that cold night that Erin left Chicago, and him, forever. He threw himself into his work, but even that couldn't distract him from the constant ache in his heart.

Erin had thrived in her new work environment. She didn't have the same familial attachments to her unit in Chicago, and it made it easier for her to separate her work from her personal life. Her new boss, Sergeant Tuckson had taken an instant liking to Erin, seeing parts of herself in the young detective's tenacity and perseverance. Along with Sergeant Benson, Jane Tuckson had become a confidant to Erin. A role model to guide her, something she desperately needed when she first came to New York.

Jay was stuck. Voight had given him several opportunities to move units, to take over Intelligence, to advance his career. But Jay wasn't ready, and Hank understood. Things hadn't been the same since that night and he knew that he couldn't do anything to help the young detective move on. Every night Jay went back home to the same quiet home, the same key laying on the coffee table, the same empty bed. His friends had tried to get him out of his funk, but after a few months they learnt it was best to leave him be. He still hung out with them, still laughed at their jokes and drank with them at Molly's; but everyone who knew him could tell that Jay Halstead was broken. And the only person who could fix him was a 12 hours 38 minutes car ride away.

LINSTEAD

"Lindsay! Jones!" Sergeant Tuckson yelled through the office "I've got an assignment for you."

"Just us?" Erin asked confused. Usually their whole team was involved in their cases, even the UC ones.

"You're needed at another unit. They think Jonathan Haynes has started selling there, and they need people that are already familiar with the case to help them out." The woman explained.

Erin and her partner shared a sigh. Jonathan Haynes was an up and coming drug dealer, specialising in his own unique brand of Molly. The drugs were laced with a poisonous hallucogenic which PD hadn't been able to distinguish yet. He had started off in New York, but it seemed he had decided to take his business to a more profitable area.

"We got this Sarge." Detective Jones replied "where are we headed?"

Erin felt a nervous stir in the pit of her stomach as her boss looked her in the eye.

"You're being sent to the 21st district's Intelligence unit of the Chicago P.D."

"Jane, I -" Erin began.

"Their boss has requested my best UC's Erin. You and Jones are the best ewuipped to handle this." Sargent Tuckson replied "pack your bags Lindsay, you're headed home."

A/N: so this isn't going to be a long story, maybe 5-10 chapter max! I've had this story idea in my head since the finale and I've finally gotten time to write it so I wanted to post it asap before I changed anything else and ended up back in the writing phase for another two weeks :P

I promise Jay won't be as sappy and pathetic as I made him sound haha but he is hurt and that's something Erin has to deal with. I really want to explore the ramifications her leaving without any word to him may have.

Hope you all enjoyed and please leave a review and let me know what you think!

Maddie :)