Set in the summer of 1917, the story follows the war-wounded Hastings to the Styles St. Mary estate of his frien John Cavendish. The Cavendish household is wrought with tension due to the marriage of John's widowed mother to a suspicius younger man. In the village, Hastings runs into his old friend Hercule Poirot and, when the estate's trouble turns deadly, the friends unite to solve a most baffling case.

A conscientious objector dies in police custody, setting in motion a series of suspicious deaths and a complicated puzzle for Foyle.

Hercule Poirot has retired to a country village, until his neighbor is found murdered. Poirot reunites with his old partner, Chief Inspector Japp, to find the culprit, exposing a web of blackmail, envy, and murder.

Poirot agrees to visit the husband of a famous actress to urge him to reconsider her request for a divorce. Edgware insists that he has already agreed to his wife's request. Yet, within twenty-four hours, he is found murdered.

"After 25 years in the force, Detective Inspector Henry Crabbe has lost his appetite for the job. He plans to take early retirement and open his dream restaurant, Pie in the Sky. But his accountant wife, Margaret, doesn't think the numbers add up. And his boss, ACC Fisher needs him around to handle those delicate cases at which he excels. Although craving retirement, Crabbe discovers that crime solving can be just as hard to resist as his signature...

It's 1953 and Sidney Chambers is vicar of Grantchester, a village just outside Cambridge, England. Sidney's is a quiet life. He tends to his flock, keeps up with his jazz collection, and does his best to contain his passion for beautiful heiress Amanda Kendall. But when one of his parishioners dies in suspicious circumstances, Sidney quickly finds that people confide things in a parish priest that they would never tell police.

Elizabeth and Darcy, now six years married and with two young sons, are preparing for the lavish annual ball at their magnificent Pemberley home.

Devastated by the brutal murder of his wife, John Luther returns to policing in a different world. His old unit has gone and he's working in the newly created Serious and Serial unit, headed by former police complaints officer Martin Schenk. Luther quickly gathers together his team, rescuing his old partner Detective Justin Ripley from uniform.

Long-suffering DI Henry Crabbe is a semi-retired detective who prefers experimenting in the kitchen to catching criminals.

Detective Chief Inspector Tony Gates is an exemplary cop. He's got the best crime stats on the force and a loyal team working under him. But the head of the police anticorruption unit, Superintendent Ted Hastings, has his doubts about Gates. Is he really that good? And more importantly, is he really that clean? Hastings decides to find out and all on a new arrival to his department, Detective Sergeant Steven Arnott to help him do it. As the net tightens...