An ex-military doctor finds herself in a deadly battle for survival when the Irish mafia seize control of the hospital at which she works. When her son is taken hostage, she is forced to rely upon her battle-hardened past and lethal skills after realizing there's no one left to save the day but her.
當神秘專線響起，負責接聽的你，愿意付出多少代價完成任務？ 該劇改編自馬修·奎克的同名小說，第一季結尾，FBI基層探員彼得·蘇德蘭（加布里埃爾·巴索 Gabriel Basso 飾）因拯救總統而立下大功。本季中，他將正式成為暗夜行動的一分子，然而，加入這個絕密組織，也意味著投身危機四伏、爾虞我詐的世界。
A couple buy a beautiful home in an upper-class neighbourhood where a murder-suicide occurred. However, when strange events begin to happen, they soon suspect their new neighbour may have played a part in the killings.