N or M?

The Secret Adversary, which is the first novel in the series that follows Tommy and Tuppence, chronicles the pair's quest to find a mysterious woman who goes by the name of Jane Finn. Earlier in 1915, Jane Finn had been given a secret document while aboard the Lusitania, which was sunk due to a torpedo hit. That document was a treaty, and Jane was entrusted by the stranger who gave it to her to deliver it to the American Embassy located in London. Years later, the document has still never been delivered....

A far-from-warm welcome greets Hercule Poirot as he arrives for lunch at Lucy Angkatell's country house. A man lies dying by the swimming pool, his blood dripping into the water. His wife stands over him, holding a revolver. As Poirot investigates, he begins to realize that beneath the respectable surface lies a tangle of family secrets and everyone becomes a suspect.

What is the connection among a failed suicide attempt, a wrongful accusation of theft against a schoolgirl, and the romantic life of a famous tennis player? To the casual observer, apparently nothing. But when a house party gathers at Gull's Point, the seaside home of an elderly widow, earlier events come to a dramatic head. As Superintendent Battle discovers, it is all part of a carefully laid plan - for murder.

Well, it's no wonder. The plot - suspicion for an elderly woman's murder falls on her mysterious lodger - is from Agatha Christie. The wonderful character happens to be the world's most famous sleuth, Hercule Poirot.

An urgent cry for help brings Poirot to France. But he arrives too late to save his client, whose brutally stabbed body now lies face downwards in a shallow grave on a golf course. But why is the dead man wearing his son's overcoat? And who was the impassioned love-letter in the pocket for? Before Poirot can answer these questions, the case is turned upside down by the discovery of a second, identically murdered corpse....

Agatha Christie wrote The Mysterious Affair at Styles during the midst of World War I. The book was published in 1920 and became extremely popular because of the well-grounded plot and interesting characters. The novel is set at Styles Court, a wealthy estate in England during the war. The estate's owner, Mrs. Cavendish, had inherited the estate as well as vast sums of money from her late husband.

Tommy and Tuppence, two people flat broke and out of work, are restless for excitement. They embark on a daring business scheme - Young Adventurers Ltd. - "willing to do anything, go anywhere." But their first assignment, for the sinister Mr. Whittington, draws them into a diabolical, political conspiracy. Under the eye of the elusive, ruthless Mr. Brown, they find themselves plunged into more danger than they ever imagined.

Mrs Packington felt alone, helpless, and utterly forlorn. But her life changed when she stumbled upon an advertisement in The Times/i> which read: "ARE YOU HAPPY? IF NOT, CONSULT MR PARKER PYNE". Equally adept at putting together the pieces of a marriage or the fragments of a murder mystery, Mr Parker Pyne was possibly the world's most unconventional private eye, and certainly its most charming.

"Anyone who murdered Colonel Protheroe," declared the parson, "would be doing the world at large a service!" It was a careless remark for a man of the cloth. And one which was to come back and haunt the clergyman just a few hours later. From seven potential murderers, Miss Marple must seek out the suspect who has both motive and opportunity.

Tommy and Tuppence are at it again. This detective couple can never walk away from a mystery and these two later novels are no exception. By the Pricking of My Thumbs: When Tommy and Tuppence visit an elderly aunt in her gothic nursing home, they think nothing of her mistrust of the doctors; after all, Ada is a very difficult old lady. Postern of Fate: Tommy and Tuppence Beresford have just become the proud owners of an old house in an English village. Along with the property, they have inherited some worthless bric-a-brac, including a collection of antique books....

The villagers of Chipping Cleghorn, including Jane Marple, are agog with curiosity over an advertisement in the local gazette that read: "A murder is announced and will take place on Friday October 29th, at Little Paddocks at 6:30 p.m." Unable to resist the mysterious invitation, a crowd begins to gather at Little Paddocks at the appointed time when, without warning, the lights go out....

In utter disbelief, Miss Marple read the letter addressed to her from the recently deceased Mr. Rafiel...an acquaintance she had met briefly on her travels. He had left instructions for her to investigate a crime after his death. The only problem was, he had failed to tell her who was involved or where and when the crime had been committed. It was most intriguing. Soon she is faced with a new crime...the ultimate crime...murder. It seems someone is adamant that past evils remained buried....

Another title in the ever popular Agatha Christie series.The suave and debonair Colonel Race must solve a question, not of ‘accidental death or suicide’, but ‘murder or double murder’.Pretty, young Anne came to London looking for adventure. In fact, adventure comes looking for her – and finds her immediately at Hyde Park Corner tube station. Anne is present on the platform when a thin man, reeking of mothballs, loses his balance and is electocuted on the rails.The Scotland Yard verdict is accidental death.

On holiday on the Cornish Riviera, Hercule Poirot is alarmed to hear pretty Nick Buckley describe her recent "accidental brushes with death". First, on a treacherous Cornish hillside, the brakes on her car failed. Then, on a coastal path, a falling boulder missed her by inches. Later, an oil painting fell and almost crushed her in bed. So when Poirot finds a bullet hole in Nick's sun hat, he decides that this girl needs his help. Can he find the would-be killer before he hits his target?

Miss Emily was old, rich, and afraid - and now, she's dead. Her terrified plea to Hercule Poirot came a little too late. All that's left is a house full of greedy heirs, and a very strange letter that could solve the mystery - or add to it.