海湾战争后，美国于1992年在伊拉克的南方守望行动中遭遇胡巴尔群楼爆炸攻击，美军将嫌疑组织首领绑架至美秘密调查。FBI探员安东尼•哈勃德（丹泽尔•华盛顿 Denzel Washington 饰）及阿拉伯语搭档弗兰克（托尼•夏尔赫布 Tony　Shalhoub 饰）负责调查纽约巴士自杀炸弹恐怖袭击过程中收到神秘讯息“放人”。CIA特工伊莉斯（安妮特•贝宁 Annette Bening 饰）坚称为恐怖分子办理学生签证入美的阿拉伯人萨米尔（塞米•鲍亚吉拉 Sami Bouajila）是自己重要线人，却不肯透露其他信息。随着恐怖袭击的升级，将军威廉姆•得弗罗（布鲁斯•威利斯 Bruce Willis 饰）奉总统之名进驻纽约对布鲁克林区实施军管，将所有青壮年阿拉伯人收监待审。军方对人权与民主的践踏激起纽约市民的强烈反感，示威游行与下一波恐怖活动的威胁让所有人进退两难……

The second season, like the first, follows two different timelines. The primary timeline follows Patty, Ellen, and Tom as the firm goes up against an energy company who have engaged in unethical practices. A former lover of Patty's, Daniel Purcell, brings the matter to her attention, but then inexplicably backs out, leaving Patty up against UNR CEO Walter Kendrick and his fierce lawyer Claire Maddox. Meanwhile, Ellen works with the FBI to bring down Patty, while also seeking revenge on Arthur Frobisher for his presumed role in her fiance's death. Ellen is unaware that Patty is suspicious of her, and that Frobisher's criminal connections appear to extend to her new friend Wes.

A second timeline takes place six months later, when Ellen meets with an unknown person in a hotel room, and subsequently appears to shoot them.