Was a young troubled teen from Chicago became a C.I. for the police department, turnes into caring and loveable Det. Erin Lindsay in the Intelligence department of Chicago Police, mentored by Sergeant Hank Voight. Voight and his wife took in Erin at age 16 as her mother was a junkie and her father was in jail. Was raised with Voights son Justin, like a brother. She has soft spot for girls with troubled pasts and tries to help those in need.