剧集讲述女主（Margarita Levieva饰）正与女儿在欧洲度假，此时CIA的出现迫使她面对自己隐藏已久的KGB身份。过去俄国进行秘密实验时令到一些KGB拥有特殊力量，而一连串与此能力有关的死亡事件发生令女主不能再躲避起来，但是对付这名凶徒的代价是她可能失去家人及新生活。
Small Town, Big Story has started filming on location in Ireland under a UK Equity contract and follows goings-on in Drumbán, a rural village of rattled misfits. When a major Hollywood production rolls into town, a spotlight is thrown on a secret that has been kept hidden since the eve of the Millennium. Hendricks (Mad Men) is playing Wendy Patterson, a local girl done good as a hot-shot television producer, who returns to her hometown from LA with the Hollywood production in tow, while House of the Dragon’s Considine is local doctor and pillar of the community Seamus Proctor.
The detectives investigate a multiple homicide at a fast food restaurant; an addict gives his baby daughter to a drug dealer as collateral on an overdue loan; Internal Affairs reopens the Kirkendall case.
In the fourth season of this award-winning show, the action at New York City's 15th Precinct is as hectic as ever. While Lieutenant Fancy continues as precinct commander, Detective Andy Sipowicz, although still a bit rough around the edges, has mellowed with the birth of his son. Detective Bobby Simone and Detective Diane Russell take the next step in their relationship, James Martinez becomes the Squad Delegate, and Greg Meadavoy considers becoming a surrogate father. But one thing that hasn't changed is the squad's determination to make sure the bad guys get their day in court and to also attempt to maintain a touch of normalcy in their personal lives even as they investigate cases that often put them directly in the line of fire.
