When Cora Lansquenet is savagely murdered with a hatchet, the extraordinary remark she made the previous day at her brother Richard's funeral suddenly takes on a chilling significance. At the reading of Richard's will, Cora was clearly heard to say, "It's been hushed up very nicely, hasn't it.... But he was murdered, wasn't he?"

In desperation, the family solicitor turns to Hercule Poirot to unravel the mystery....

Lucy Angkatell invited Hercule Poirot to lunch. To tease the great detective, her guests stage a mock murder beside the swimming pool. Unfortunately, the victim plays the scene for real. As his blood drips into the water, John Christow gasps one final word: "Henrietta". In the confusion, a gun sinks to the bottom of the pool. Poirot's enquiries reveal a complex web of romantic attachments. It seems everyone in the drama is a suspect, and each a victim of love.

A few weeks after marrying an attractive widow, Gordon Cloade is tragically killed by a bomb blast in the London blitz. Overnight, the former Mrs. Underhay finds herself in sole possession of the Cloade family fortune. Shortly afterward, Hercule Poirot receives a visit from the dead man's sister-in-law who claims she has been warned by "spirits" that Mrs. Underhay's first husband is still alive. Poirot has his suspicions when he is asked to find a missing person guided only by the spirit world.

Late one night, two teachers investigate a mysterious flashing light in the sports pavilion, while the rest of the school sleeps. There, among the lacrosse sticks, they stumble upon the body of the unpopular games mistress, shot through the heart from point blank range.

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.

Three young women share a London flat. The first is a coolly efficient secretary. The second is an artist. The third interrupts Hercule Poirot's breakfast, confessing that she is a murderer - and then promptly disappears. Slowly, Poirot learns of the rumors surrounding the mysterious third girl, her family, and her disappearance. Yet hard evidence is needed before the great detective can pronounce her guilty, innocent, or insane.

At a Hallowe'en party, Joyce - a hostile thirteen-year-old - boasts that she once witnessed a murder. When no one believes her, she storms off home. But within hours her body is found, still in the house, drowned in an apple-bobbing tub. That night, Hercule Poirot is called in to find the "evil presence". But first he must establish whether he is looking for a murderer or a double murderer.

Framed in the doorway of Hercule Poirot's bedroom stands an uninvited guest, coated from head to foot in dust. The man stares for a moment, then he sways and falls. Who is he? Is he suffering from shock or just exhaustion? Above all, what is the significance of the figure 4, scribbled over and over again on a sheet of paper? Poirot finds himself plunged into a worldof international intrigue, risking his life - and that of his twin brother - to uncover the truth.

Whilst organising a mock murder hunt for the village fete hosted by Sir George and Lady Stubbs, a feeling of dread settles on the famous crime novelist Adriane Oliver. Call it instinct, but it's a feeling she just can't explain...or get away from. In desperation she summons her old friend, Hercule Poirot - and her instincts are soon proved correct when the "pretend" murder victim is discovered playing the scene for real, a rope wrapped tightly around her neck.

As instructed, stenographer Sheila Webb let herself into the house at 19 Wilbraham Crescent. It was then that she made a grisly discovery: the body of a dead man sprawled across the living-room floor. What intrigued Poirot about the case was the time factor. Although in a state of shock, Sheila clearly remembered having heard a cuckoo clock strike 3.00. Yet, the four other clocks in the living room all showed the time as 4.13. Even more strange: only one of these clocks belonged to the owner of the house.

An outbreak of kleptomania at a student hostel was not normally the sort of crime that aroused Hercule Poirot's interest. But then he saw the list of stolen and vandalized items: a stethoscope, some old flannel trousers, a box of chocolates, a slashed rucksack, and a diamond ring found in a bowl of soup. The list made absolutely no sense at all. But, reasoned Poirot, if this was merely a petty thief at work, why was everyone at the hostel so frightened?

In appearance Hercule Poirot hardly resembled an ancient Greek hero. Yet, reasoned the detective, like Hercules he had been responsible for ridding society of some of its most unpleasant monsters. So, in the period leading up to his retirement, Poirot made up his mind to accept just 12 more cases: his self-imposed "labours". Each would go down in the annals of crime as a heroic feat of deduction.

Christmas Eve, and the Lee family's reunion is shattered by a deafening crash of furniture and a high-pitched wailing scream. Upstairs, the tyrannical Simeon Lee lies dead in a pool of blood, his throat slashed. When Hercule Poirot offers to assist, he finds an atmosphere not of mourning but of mutual suspicion. It seems everyone had their own reason to hate the old man....

Sir Charles Cartwright should have known better than to allow 13 guests to sit down for dinner. For at the end of the evening one of them is dead - choked by a cocktail that contained no trace of poison. Predictable, says Hercule Poirot, the great detective. But entirely unpredictable is that he can find absolutely no motive for murder.…

Hercule Poirot stood on the cliff-top. For here, many years earlier, there had been a tragic accident: the broken body of a woman was discovered on the rocks at the foot of the cliff. This was followed by the grisly discovery of two more bodies, a husband and wife, shot dead. But who had killed whom? Was it a suicide pact? A crime of passion? Or cold-blooded murder?