该剧聚焦军情五处特工约翰·休斯（肖恩·埃文斯 Shaun Evans 饰）的双线挣扎：一边是危机四伏的任务，一边是濒临破碎的家庭。一场秘密会面，掀起无法回头的漩涡。压力如影随形，渗透工作、爱情与无处不在的注视之下。当猜忌蔓延、忠诚信仰动摇，我们终将看清：有些秘密，代价沉重。
As Leo's replacement Thomas Chamberlain arrives Nikki investigates the murders of Rachel Freedman, shot in the head, and her little autistic son Nathan, who was poisoned. Nikki rejects policewoman Anne Burchett's theory that Rachel killed them both but is perturbed when an impostor, claiming to be Rachel's sister, visits the morgue. At the same time the disfigured corpse of Eva Liron is discovered, killed with the same poison as Nathan. She had been the nanny to French hot shot footballer Isaac Dreyfus and was planning to blackmail him over a sex tape of them both. Jewish Isaac is a controversial figure due to his anti-Muslim sentiments but he denies ant part in the murders. Then another victim, Isaac's agent Mousa, is discovered dead.
主妇花惠（中村百合香 饰）与丈夫弘树（佐野玲於 饰）及4岁女儿看似幸福，却面临着丧偶式育儿与长达5年的“亲密关系缺失”。深感不安的花惠主动求爱却被拒，积怨爆发之际，丈夫竟提议：“虽然我爱你……但你可以去外面寻找慰藉，无论是身体的需求还是内心的孤独。” 为了维持家庭圆满，花惠在丈夫的默许下，开始通过前男友、交友软件等途径寻找情感寄托。然而，“只要能发泄欲望就行了吗？不，我想被自己发自内心深爱着的人来满足。” 她的这份心愿究竟会走向何方……
