Bethany 'Beth' Halstead, the younger sister of Jay and Will and has a very close relationship with both of their brothers. Beth is known to be the female version of Jay, as both are stubborn but also like to have a laugh.
At the age of 18, Beth joined the police academy and became best friends with Adam Ruzek on the first day.
At the age of 21 she moved to intelligence after sitting her detective exam.
Now that she's in intelligence, she's been partnered with her brother, but Voight is now thinking that was a bad move because of one laughs it sets the other on off.
During one shift her and Jay are asked to go over to Firehouse 51 about a recent arson they attended when certain firefighter named Blake Gallo catches her eye.
What will Jay and Will think about their sister Beth dating a firefighter?
Find out more in
FIGHTING STRONG
Ava Halstead just came back from 2 years as a Marine and is going to firehouse 51 on squad 3 but isn't on the best terms with her brothers because of them not wanting her to be a Marine but she didn't care, she's a lot more like her twin brother Jay then Will
What happens when she meets the new candidate on 81, Blake Gallo