1948年，國共內戰已經(jīng)到了白熱化時(shí)期。國民黨頹勢已現，然而此時(shí)又恰恰是黎明前那最為黑暗的時(shí)刻。在一切紛爭的交匯之地——十里洋場(chǎng)上海，被捕的地下黨員王三星泄露一個(gè)驚天秘密。為了揪出叛徒王三星口中的臥底，保密局處長(cháng)軍同高級特工唐棟（柳云龍 飾）受命對可疑之人一一排查，最終擁有美貌與智慧的女醫生李赫男（童蕾 飾）進(jìn)入了她的視野。久經(jīng)考驗的李赫男自然第一時(shí)間便感知到蹲守在暗處滿(mǎn)懷惡意與殺氣的對手，她從容不迫的態(tài)度與膽識也讓?xiě)T常風(fēng)花雪月的唐棟難以自持。在此后的日子里，男人與女人、情愛(ài)與理想的角力交替上演，成敗就在一念間…

高收成（馬德鐘 飾）是一名律所合伙人，一次偶然中，他在一個(gè)名叫“人有相似”的網(wǎng)站上和自己的初戀俞風(fēng)（湯洛雯 飾）重逢了。這個(gè)網(wǎng)站專(zhuān)門(mén)用以尋找樣貌相似的人，而俞風(fēng)所尋找的，正是和高收成長(cháng)相相似的男人，沒(méi)想到還真有，這個(gè)男人的名字叫做巫祺男（馬德鐘 飾）。

　　講述一個(gè)失去記憶的女人和自己曾經(jīng)深?lèi)和唇^的丈夫再次相愛(ài)的故事。

　　After her bittersweet success in series one, Karen has been promoted to Detective Inspector and seemingly given the authority she has long been fighting for. Just as she’s getting into the swing of her powerful new role, she is assigned an infamous unsolved case that will put her under intense scrutiny; from her boss, from the media, and ultimately, from sinister forces that would rather the past stayed in the past.
　　The 1984 case of Catriona and Adam Grant has confounded investigators and intrigued the public like no other. Catriona, the charming young heiress to a vast oil fortune, and her two year old son Adam, were brutally kidnapped at gunpoint outside a fish and chip shop in Fife. The ransom notes that followed stirred up an uncontrollable press storm, but when the culprits fell silent, the police faltered, and Catriona and Adam were never seen again.
　　Now, a man’s body has been discovered, with indisputable links to the original kidnap. With the first piece of evidence in decades, Karen must assemble an unbeatable team alongside her sincere and lovable sidekick DC Jason ‘Mint’ and the brilliant – but romantically complicated – DS Phil Parhatka. With the international renown of the kidnap and the constant pressure from Catriona’s father, Sir Broderick Grant, the team take on the biggest challenge of their careers to date. As Karen delves deeper into what happened in the autumn of 1984, political grudges and painful secrets reveal themselves, and it soon becomes clear… the past is far from dead.

故事發(fā)生在1939年的8月，八名身處世界各地，互相并不認識的人在同一時(shí)間收到了歐文夫婦的來(lái)信，信中熱情的邀請他們前往位于德文海岸附近的士兵島上做客，在這里，這對夫妻擁有一幢非常豪華的別墅。很快，八個(gè)人就各自動(dòng)身了，可當抵達了小島后，他們卻被告知歐文夫婦并不在家，接待他們的是兩名島上的管家。