While investigating the homicide of an entire family, the team once again finds themselves entangled in an FBI case. They also find themselves distracted by an unusually surly Provenza.
As the Homecoming Week float competition heats up, Rusty and Ashleigh work hard to obtain a win while Casey and Cappie try to avoid one another. Elsewhere, Evan learns that he may lose his trust fund, and Ashleigh uncovers a secret of Fisher's.
Jerry defends a man charged with permitting a relative to sell drugs out of his barbershop. Roz begins working on active cases again and Bobbi's divorce proceedings begin.
Following the events of her bombshell announcement, the fifth season begins as Nancy digs deeper into the drug world and finds comfort in an unlikely family member.
