British detective inspector Kris Marshall is assigned to investigate a murder on the paradise island of Saint-Marie in the Caribbean.

　　Episode 1: High Castle
　　A university professor who had been working as a translator at the Nuremberg trials is stabbed to death. As Foyle investigates, he delves into the world of international oil politics and corrupt Nazi businessmen. Sam assists the murder inquiry by going undercover, despite her pregnancy.
　　Episode 2: Trespass
　　As Britain debates the creation of a Jewish state in Palestine, the son of a wealthy Jewish businessman is assaulted. The flames of anti-Semitism have recently been fanned in London by Charles Lucas, a right-wing writer, and Foyle suspects the attack was racially motivated.
　　Episode 3: Elise
　　After an attempt on Hilda Pierce's life, Foyle scrutinizes her work for SOE during the war. Could this be related to the deaths of nine SOE agents in France and rumors of a traitor called Plato?

　　ITV触屏悬疑犯罪题材，在一处建筑工地上发现一具39年前的男尸，警方不遗余力的追查，死者的身份到底是什么，又是谁造成了他的死亡..牵扯出所有人的肮脏过往，案子和凶手是谁已经不重要了，重要的是故事里面的每一个人