Follows Marianne and Connell, from different backgrounds but the same small town in Ireland, as they weave in and out of each other's romantic lives.

三十五岁左右的著名建筑师Ellen（Morven Christie）怀孕了，聪明热情的Paula（Vicky McClure）将在她休产假期间顶替她的工作。Ellen很想在工作交接的过程中支持她，但有些事情感觉不对劲。Ellen怀疑自己的「代班」有不可告人的目的，令她不得不担心自己的安危。她的这种疑心究竟可信吗？是女性竞争的结果，还是升到一定级别的职业女性的「不安全感」在作祟？或者，她的感觉牵出了一些更深层的东西？

Villanelle has disappeared, and Eve is left reeling, having no idea if the woman she stabbed is alive or dead. With both of them in deep trouble, Eve has to find Villanelle before someone else does. But unfortunately, she's not the only person looking for her.

Eve is a bored, whip-smart, pay-grade MI5 security officer whose desk-bound job doesn't fulfill her fantasies of being a spy. Villanelle is a mercurial, talented killer who clings to the luxuries her violent job affords her. Everything changes when they cross paths.