20世纪70年代，美国驻莫斯科大使馆的两名女秘书在丈夫遇害后成为中央情报局特工，揭露了这场悲剧背后隐藏的冷战阴谋。

　　第二季故事发生在第一季结局的10个月后，时间线为一个美国独立纪念日的周末。

　　Based on the novel by Hollie Overton.
　　It will follow the story of twin sisters Lily and Abby, whose lives are shattered when Lily is abducted from their quiet rural English town by beloved local teacher Rick Hansen. After years of abuse in captivity, Lily escapes, only to discover that freedom brings its own challenges. The world she longed to return to has moved on without her. As Abby, Lily and their mother Eve struggle to rebuild their family, they must confront the lasting damage and the terrifying reality that Rick is still out there, determined to control the narrative and evade justice.

　　Returning for an extended duration of eight episodes, Patience (Ella Maisy Purvis) will continue her work in the police criminal records department of City of York Police after establishing herself as an invaluable member of the team, bringing her unique insight into a series of perplexing cases. However, when a new boss, Detective Frankie Monroe (Jessica Hynes) brings a very different management style, it proves tricky for them both to navigate. Love is also in the air in this series as Patience begins a relationship with a work colleague Elliot and the police department gets a makeover with the arrival of a new PR consultant all whilst tackling intriguing crimes in extraordinary settings such as York Minster.

　　为了找到失踪的女儿，你愿意深入错综复杂的黑暗秘密之网吗？