'Chicago Fire': The New Firefighter Has a History With Dawson (Exclusive Video)

Chicago Fire S03E19 Still - H 2015
Elizabeth Morris/NBC

Chicago Fire S03E19 Still - H 2015

Truck 81 is getting an extra dose of estrogen.

Miranda Rae Mayo (Pretty Little Liars) joins Chicago Fire on Tuesday as Stella Kid, the latest member of the team. However, when it comes time for introductions, she learns she already knows at least one person at 51.

No, it's not one of Severide's many past conquests (although that wouldn't have been surprising). As seen in The Hollywood Reporter's exclusive video from Tuesday's episode, it turns out Dawson (Monica Raymund) and Stella go way back.

"I can't work with her," a defiant Dawson tells the group. But that's not the only twist.

Check out the exclusive video below and get to know the newest member of Firehouse 51:

Chicago Fire airs Tuesdays at 10 p.m. on NBC.