Ep 1. The Murder at the Vicarage

In Agatha Christie's Marple season 1 episode 1, titled "The Murder at the Vicarage," Miss Marple becomes involved in a murder investigation when the respected Colonel Lucius Protheroe is found dead in the vicarage study. The prime suspect is the local vicar, Leonard Clement, who admits to having had an argument with the Colonel shortly before the murder. Miss Marple, however, is convinced of the vicar's innocence and sets out to uncover the real killer.

As the investigation unfolds, Miss Marple discovers that many people had motive to kill the Colonel. His wife, Anne, had been carrying on an affair with artist Lawrence Redding, who was also seen arguing with the Colonel on the day of the murder. The Colonel's daughter, Lettice, was rumored to be engaged to Redding and was seen arguing with her father about the relationship. Even the Colonel's secretary, a mysterious young woman named Gladys Cram, seems to have something to hide.

With the help of her friend and confidante, the local doctor Haydock, Miss Marple begins to piece together the clues and finally solves the mystery. Along the way, she uses her sharp wit and clever intuition to outsmart the police and unmask the real killer.

The Murder at the Vicarage is a classic whodunit with all the elements of an Agatha Christie mystery. The small village setting, the eccentric characters, and the intricate plot all contribute to the suspense and intrigue of the story. As always, Miss Marple proves to be a formidable detective, with a keen eye for detail and a deep understanding of human nature. Fans of the series will not be disappointed by this thrilling and entertaining first episode.