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.
As Richard Beck's timeline for a deadly attack moves up and Samantha panics, Ruzek and the team scramble to get ahead of unprecedented disaster.
A tragic crime leads the team closer to the Beck family and their deadly ideology. Ruzek makes progress infiltrating the Becks, earning Samantha and Richard's trust with a bold move.
When a family is poisoned in their home, the team discovers a connection to the Becks.