Ruzek grapples with his father's worsening condition while Intelligence searches for an elusive serial killer.
An unexpected visitor causes disruption for Ruzek and Burgess amidst an emotional investigation involving an unidentified young girl.
Burgess is put to the test as she looks to make an advancement in her career.
Ruzek gets mixed up in a case after a late-night poker game is raided.
Burgess works an extra shift at the 13th District and gets caught in the middle of a drive-by attack on refugees. The team works together to track down the shooter and uncover the true motive behind the attack.
