与雪女同行吃蟹

　约翰•波特（John Porter）回来了，而这一次他处在一个前所未有的困境中。20号分部是一支训练有素、久经沙场的新团体。由获得过银紫荆星章的英国中士迈克尔•斯顿布奇，和前美国三角洲部队突击队成员达米恩•斯科特组成。他们受命于雷厉风行的上校埃莉诺•格兰特，要追捕一个危险的，难以捉摸的恐怖分子和化解一个可能引发战争的阴谋.为了跟踪臭名昭著的拉蒂夫，约翰•波特已经被派去做卧底两个月了。上校埃莉诺•格兰特再次听到他的消息是在一段恶心的被俘广播中。斯顿布奇和他的队友搞了个突然袭击，但是拉蒂夫还是早了他们一步，他们的营救计划失败了。拉蒂夫将处死波特，所有20号分部的成员们只能眼睁睁的看着悲剧发生。但是，在波特美国朋友达米恩•斯科特——唯一见过拉蒂夫的官员的帮助下，20号分部发现了波特临终前留下的线索。

　　At the beginning of the season Sylvia becomes pregnant with Andy's child. A baby boy, Theo, is born towards the end of the season. This is contrasted with the fate that awaits Sipowicz's older son, Andy Jr., who announces that he is to join the police force. Andy is finally bonding with his estranged son when he is gunned down, which leads the elder Sipowicz to fall off the wagon. Andy Jr's murderers are killed themselves by Simone in an act of self defense.
　　Bobby and Diane, whose relationship had been put on hold while she attended AA, resume their relationship only for Diane to begin drinking again when her abusive father beats her mother. Her father is eventually killed and her mother becomes the prime suspect.
　　James Martinez and new detective Adrienne Lesniak begin an affair but only after Lesniak tells Medavoy that she is gay, then that she is not; Martinez later breaks up with her due to her controlling and unpleasant behavior, and Lesniak eventually leaves the squad. Medavoy himself leaves his wife, recognizing that she is holding him back but it is too late to save his relationship with Donna who leaves to take up a job with Apple.

忠臣内阁首辅苏氏之女苏莹莹（徐轸轸 饰）在嫁给二皇子谢予衡（朱旻昕 饰）当天，被谢予衡率兵以苏首辅通敌叛国为由杀灭全家，谢予衡也由此登上太子之位。三年后，苏莹莹归来意欲为父沉冤昭雪，查清通敌叛国一案，和七皇子谢屹安（林泽辉 饰）联手，伪装成谢屹安身边的丫鬟素樱。两人从假银票案入手，发现案子与苏首辅、谢予衡相关，便深入调查。两人也由一开始的不对付到互生情愫，齐心协力、不顾危险亲身接近假银票案的涉案人员，一步步接近真相，也由此揭穿了谢予衡意图谋权篡位的阴谋——原来谢予衡不是皇室血脉，他为了争夺王权，制造假银票聚敛财富，行贿百官且培养杀手组织“朱雀阁”来铲除异己，因为苏首辅生前查到谢予衡是假银票案的主谋，故而谢予衡命人盗取苏首辅的官印，伪造苏首辅通敌的文书来陷害苏首辅。