保持冷靜：Andy McNally破壞了Sam Swarek的臥底調查，令Sam生命受到威脅，自己亦陷入水深火熱中。另外，Andy重回工作崗位的希望大受打擊，因為新進警察Nick Collins有可能取代其位置，而她能否復職，最終要交由法庭審判。究竟 Andy對警察工作的熱情能否令事業起死回生？她與Sam能否再次燃起火花?而其中一名新進警察面臨種族歧視指控，他能否及時洗脫嫌疑，避免另一名警員同樣陷入危機？
Grace under fire: After throwing Detective Sam Swarek’s undercover investigation into chaos and putting his life in danger, Andy McNally is facing the heat. Her high hopes of getting back on active duty crashes and burns when she meets Nick Collins, the rookie who just might take her place—and when she learns that her career is in the hands of an official tribunal. Can Andy’s passion for police work fire up her dying career? Will she and Sam be able to reignite the sparks they once shared? And when one of the rookies faces accusations of a racial crime, can the detective in question clear their name before another cop career goes up in flames?