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.
赵薇 Wei Zhao 古天乐 钟汉良 卢海鹏 林雪 张兆辉 谢天华 洪天明 黄浩然 龚慈恩 王梓轩 欧锦棠 何果轩 詹秉熙 菁玮 朱健钧 杨尚斌 安小龙 麦子乐 施祖男
柳波芙·阿克肖诺娃 琳达·拉宾什 彼得·费奥多罗夫 拉丽萨·古泽耶娃 奥列格·瓦西里科夫 阿纳斯塔西娅·米希纳 Denis Prytkov Kseniya Katalymova Evgeniy Kharitonov 弗谢沃罗德·沃洛丁 Mikhail Konovalov Aleksandr Averin 亚历山大·克罗特科夫 Maksim Boyko 亚历山德拉·巴巴斯基纳 Aleksandr Shakhov Maksim Dromashko Yuliya Salmina 阿纳斯塔西娅·伏拉索娃 Taya
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