Poirot persuades the police to dig up an abandoned well in the Quarry Garden.

Later, Thora, Carmichael's assistant, is fired by a delusional Lady Clarke, who tells Poirot that she saw Thora talking to a shabbily dressed stranger on the day Carmichael was murdered.

In 2004, the novel was broadcast as a television movie featuring David Suchet as Poirot, Sarah Miles as Lady Angkatell and Megan Dodds as Henrietta Savernake, as part of the series Agatha Christie's Poirot.

Poirot labels the five alternative suspects “ the five little pigs ”: they comprise Phillip Blake (" went to the market "); Philip's brother, Meredith Blake (" stayed at home "); Elsa Greer ( now Lady Dittisham, " had roast beef "); Cecilia Williams, the governess (" had none "); and Angela Warren, Caroline ’ s younger half-sister (" went ' Wee!

When Poirot approaches Meredith Blake he introduces himself as a friend of Lady Mary Lytton-Gore, a character known from Three Act Tragedy.

Arriving at Mon Repos Poirot speaks with the daunting and domineering Lady Astwell who tells him that Sir Reuben's brother and business partner, Victor, is also a guest in the house.

Both Poirot and Hastings remember society gossip from three years back that linked Rolf and Lady Yardly.

After Mary has gone Poirot goes out and Hastings receives a visit from Lady Yardly ( she was advised to visit Poirot by her friend Mary Cavendish, who appears in The Mysterious Affair at Styles ).

When Poirot finds this out he arranges to visit Yardly Chase and is there when the lights go out and Lady Yardly is attacked by a Chinese man and her jewel stolen.

Poirot is consulted by Lady Willard, the widow of the famous Egyptologist, Sir John Willard.

Poirot meets the petulant Lady Hoggin and her put-upon companion, Miss Amy Carnaby, who is clearly frightened of her employer.

Poirot tells them their activities must stop and that the money must be returned to Lady Hoggin although he is sure that he will be able to persuade her husband not to involve the police.

Poirot visits Mertonshire where an old friend, Lady Carmichael, gives him details of the Grant family.

Lady Carmichael is thrilled to think that Poirot has visited to investigate some special crime but the detective tells her he is simply there to tame four wild horses.

Some time later, back at Lady Carmichael's, Poirot tells Sheila that her photograph has been recognised.

Four of his guests had the opportunity to take the items – Mr Johnston, a South African millionaire only just arrived in London ; Countess Vera Rossakoff, a refugee from the Russian revolution ; Bernard Parker, a young and effeminate agent for Mr Hardman, and Lady Runcorn, a middle-aged society lady whose aunt is a kleptomaniac. Poirot examines the scene of the crime and finds a man's glove and a cigarette case with the initials " BP ".

At this juncture, Lady Weardale reappears and asks Poirot if the matter could be dropped if the plans were returned.

Lavington calls on Poirot at his invitation but laughs at his request to return the letter, saying that he will reduce his demand to eighteen thousand pounds and Lady Millicent has until Tuesday when he returns from Paris to find the sum.

Poirot points out that a woman of Lady Millicent's class might dress shoddily but would never wear such low-quality shoes.

Poirot Investigates ( 1924 )-The Chocolate Box, The Veiled Lady, The Lost Mine ( US version only ).

He also appeared as Sir Reuben Astwell in " The Underdog " ( 1993 ) of the detective series Poirot.

He also speaks with the owner of ' Grasslawn ', Sir George Sanderfield, who remembers Marie – with some unease-but doesn't recall a maid on the first occasion of Madame Samoushenka's visit to his house, and thinks Poirot is mistaken.

Beginning with Three Act Tragedy ( 1934 ), Christie had perfected during the inter-war years a sub-genre of Poirot novel in which the detective himself spent much of the first third of the novel on the periphery of events.

Poirot pieces together events surrounding the murder.

In other respects there is very little personal detail regarding him in these novels, until Curtain: Poirot's Last Case, which is presumed to take place a great many years later ; with his wife now dead, Hastings rejoins Poirot at Styles to help Poirot tackle one last case, Poirot dying of a heart attack at the conclusion but leaving Hastings a confession explaining his role in events.

In some episodes, Kommissar Keller even asks everyone to gather at the scene of the crime so that he, in the manner of Hercule Poirot, can reconstruct the events leading up to, and following, the killing so that the murderer can eventually be arrested.

Poirot refers to the events of this novel in " The A. B. C.

In the portmanteau was a false packet that the real villain of the piece took out with a duplicate key and threw overboard – this was Mr Shaw who claims he was off work for two weeks due to bronchitis whilst these events transpired, however Poirot caught him by asking if he can smoke a cigar ( a request which Mr. Shaw should have declined as he couldn't stand smoke with his bronchitis problem ).

Chief Inspector Japp asks Poirot to assist Scotland Yard in the strange events which took place at a recent costumed Victory Ball.

Poirot and Hastings return to London but are able to follow events in the papers as rumour spreads leading to Mrs Pengelley's body being exhumed and traces of arsenic found.

In The Chocolate Box story the exact date is not mentioned, but in the novel Peril at End House, chapter 15, Poirot says that the events took place in 1893.

Poirot points out that in the third rubber of bridge on the night of Shaitana's murder, a grand slam occurred.

With Mrs. Oliver's help, Hercule Poirot must unmask the real evil of the night.

Poirot takes Hastings over the evidence, pointing out that his belief that he saw Norton that night relies on loose evidence: the dressing-gown, the hair, the limp.

Hastings despairs that the mystery will ever be solved when Poirot himself dies that night, apparently of natural causes.

Hastings's potential murder had, however, been averted by Poirot's presence of mind in forcing drugged hot chocolate upon him on the night that he had intended it to take place, the same action resolving Poirot to take action ; he knew that Hastings was not a murderer, but if he had not intervened Hastings would have hanged for a crime while the ' true ' murderer would have escaped seemingly innocent.

That night, Poirot pretends to sleep in his bed, having avoided drinking a drugged coffee which had been handed to him by Lee-Wortley.

Inspecting the chest, Poirot finds some holes in the back and side and asks Burgess if anything in the room is noticeably different from the night of the party.

Poirot is more suspicious than ever of Lily Margrave's jumpy demeanour and investigates the two local hotels to see if anyone was staying that night who left the hotel near midnight.

Poirot believes her and also realises that Leverson was drunk on the night in question and his strange manner is as a result of starting to shout at his uncle, pushing his shoulder and then realising he was dead as the body slid to the floor – hence the thud that Parsons heard.

Poirot concludes that this means a jar on which there is a picture of a dog who was left out all night — meaning that Bob could not have put the ball on the staircase because he had been out all night.

That night, when the Robinson's flat is empty, Poirot and Hastings lie in wait and apprehend another Italian who has come to kill Elsa Hardt and her accomplice in revenge for the death of Valdarno.

On one night, Hassan, one of the Arab servants delivers Poirot his cup of camomile tea.

As Hastings watches the desert night he hears Poirot choking having drunk the tea.

That night, the three card-playing men attack Poirot in his room, but he is saved by the pistol-carrying Schwartz.

We learn that during his first night in the hotel, Poirot did not drink his coffee, as he suspected it was drugged, and actually witnessed Gustave entering his room, rifling his pockets, and finding the note from Lementeuil.

Poirot forces Frobisher to tell him more details of the incident with the sheep and finds out that on the night concerned, the Admiral found his son in bed with blood on his clothes and blood in the washbasin but Hugh remembered nothing of what he had done.

Poirot however is convinced that Hugh is sane and begins his investigations, asking Diana to arrange for him to spend the night in the manor.

One night, Poirot is telephoned for help by a young medical acquaintance, Dr Michael Stoddart.

Poirot is puzzled but it is the unflappable Miss Lemon who coolly informs him it is the name of a new London nightclub and books him a table for that night.

On the night of the raid, Poirot stations a small man called Higgs outside the club.

In their flat one night, the conversation between Poirot and Hastings turns to the latter's belief that Poirot has never known failure in his professional career.

Poirot was introduced into the household under a false pretext by Mademoiselle Mesnard and he began by investigating the meal served on the night of M. Déroulard's death but found no leads there.