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　　Linda has a seemingly perfect marriage with her rugged and handsome husband Mark and an adorable 8 year old daughter, Chloe. But when Chloe is injured by an elderly babysitter who has slipped into dementia, Linda wants to ensure that her child is never hurt again. Initially, Heather, the new babysitter, seems like the ideal addition to this practically perfect family. But Heather is a schemer who exploits the cracks in Mark and Linda's relationship, and delights in the resulting chaos. As Linda later learns, to her horror, Heather's intentions go far beyond the mischievous.

退役女特警钟晓男受命保护华裔科学家林恒之子林子濠回国。林氏父子掌握的科研成果引发了海外财阀的觊觎，他们联手犯罪集团试图绑架林子濠窃取其核心数据。钟晓男联手华裔警察皮特，与犯罪集团展开了多次激烈较量，最终挫败对手的阴谋成功护送林子濠安全归国。

　　本剧跨越四十年，探索了北爱尔兰被称为“动乱”的动荡时期。以吉恩·麦康维尔的惊人失踪事件开场，吉恩·麦康维尔是一位十个孩子的单身母亲，1972 年在家中被绑架，从此再也没有人见过她活着。但麦康维尔只是众多被称为“失踪者”的人之一。