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I knew it! I knew it in my bones. You did away with her, with my poor mistress, and with your husband before that! [...] You do not deserve to live in this beautiful place! It is mine! It is mine--
~ Olga Seminoff accusing Mrs. Drake of murdering Mrs. Llewellyn-Smythe, before she was killed by Mrs. Drake (in the 2010 film)
Precisement, Monsieur Drake. In fact, there's only one person who has disappeared from Woodleigh Common and whose whereabouts are unknown, and Poirot believes that the poor soul lying in the garden so beautiful... is the foreigner sans ami, without a friend - the au-pair, Olga Seminoff.
~ Hercule Poirot revealed the true whereabouts of Olga Seminoff (in the 2010 film)

Olga Seminoff is a posthumous protagonist in Agatha Christie's 1969 Hercule Poirot novel, Hallowe'en Party, and its 2010 adaptation in Agatha Christie's Poirot. She is also one of the four central victims in the novel (alongside Leslie Ferrier, Joyce Reynolds and Leopold Reynolds) and chronologically the first in the novel.

She was the au-pair who served the late Mrs. Louise Llewellyn-Smythe and was accused of forging a codicil of her mistress' last will in order to obtain her fortune. In fact, it was revealed that Olga was framed the real culprits and killed off, with her body being disposed inside a well of Mrs. Rowena Drake's garden.

In Agatha Christie's Poirot, she was portrayed by Vera Graziadei (credicted as Vera Filatova).

Book Biography

Olga Seminoff was an Eastern European girl lived in poverty who was transferred to England as an au-pair, and eventually was posisted to be the maid of Mrs. Louise Llewellyn-Smythe, whom she treated kindly. However, she was lonely and without a friend, being a victim of the villiage's rumors and prejudice. Later, she began to fall in love with her mistress' gardener Michael Garfield, who was secretly using her as a pawn.

Nevertheless, Mrs. Llewellyn-Smythe had discovered that Mrs. Rowena Drake, her niece, was having an affair with Garfield, prompting her to disinherit Mrs. Drake and made a codicil to her will, giving everything to Olga. However, the real codicil was stolen and hidden by Mrs. Drake's accomplice, Leslie Ferrier, a corrupt local solicitor's clark, who repleaced it with an obviously fake one.

After Mrs. Llewellyn-Smythe passed away, Olga was framed for forgery and planned to leave with Michael Garfield, who manipulated Olga into believing him. Garfield and Rowena Drake killed Olga and dumped her body inside an empty well of their former mistress' garden. While he and Mrs. Drake was carrying Olga's corpse, Miranda Butler happened to be there and saw what they were doing. Still, Miranda was later convinced by Garfield that Olga's death was meant for a sacrifice. Ferrier was also killed off to be silenced.

Miranda only shared her story of seeing Olga's murder to her best friend, Joyce Reynolds, without telling her who were responsible. Joyce stole the story for herself and boasted it on Mrs. Drake's Halloween Party that Joyce herself had saw a murder, due to Miranda's absence for calling in sick, leading to Joyce's death. The corpse of Olga was later discovered by the police, two years after her death. It made Poirot to discover about Garfield's crimes and rushed to save Miranda as soon as possible.

In Agatha Christie's Poirot

In the 2010 film adaptation from Agatha Christie's Poirot, Olga is chronologically the third victim instead of the first, since Mr. Drake and Mrs. Llewellyn-Smythe were established as murder victims in this story and were murdered before her.

In Agatha Christie's Poirot, Olga became much sharper and cleverer than her original novel's counterpart. She was introduced to the villiage by Reverend Cotteral who attempted to start a scheme of charity to help certain Czech girls in poverty, with Olga being one of them. Here, Olga never fell in love with Michael Garfield, and discovered that he and Mrs. Rowena Drake conspired to kill Mr. Hugo Drake in a fake car accident. She informed Mrs. Llewellyn-Smythe about it, who changed her will and added a codicil.

However, because of Mrs. Drake, Garfield and Ferrier's machinations, Olga was disinherited and was framed as a golddigger. Mrs. Drake had murdered her aunt and left Olga to take the blame. Olga did not understand what was happening, and thus she went to confront Mrs. Drake, angrily accusing her for murdering Mrs. Llewellyn-Smythe and Mr. Drake, but was stabbed to death. Garfield later disposed her body inside Mrs. Drake's garden, but was saw by Miranda.

In this version, Poirot deduced what become of Olga Seminoff when he discovered the real codicil that was hidden by Ferrier, instead of hearing the news of her corpse being salvaged. Olga's body was discovered by the police after the denouement, instead of the other way around.


Agatha Christie's signature.png Heroes

Main Detectives
Hercule Poirot | Jane Marple
Secondary Detectives
Parker Pyne | Mr. Quin | Tommy and Tuppence Bresford
Amateur Detectives
Colonel Johnnie Race | Superintendent Battle | Bobby Jones | Frances Derwent | Arthur Calgary | Reniseb | Charles Hayward | Mark Easterbrook

Righteous Culprits
Mary Debenham | Princess Natalia Dragomiroff | Hector MacQueen | Edward Masterman | Colonel John Arbuthnot | Linda Arden | Count Rudolph Andrenyi | Countess Helena Andrenyi | Greta Ohlsson | Pierre Michel | Antonio Foscarelli | Hildegarde Schmidt | Cyrus Hardman | Edith de Haviland | Hercule Poirot
Short Stories
Madame Déroulard | Ronnie Oglander

Supporters, Victims & Others
Captain Arthur Hastings | Inspector Japp | Felicity Lemon | Ariadne Oliver | George the Butler | Superintendent Spence | Colonel Johnnie Race | Superintendent Battle | Countess Vera Rosakoff | Raymond West | Joyce Lemprière
Victims & Attempted Victims
Alexander Bonaparte Cust | Miranda Butler | Mrs. Otterbourne | Pilar Estravados | Olga Seminoff
Bella Duveen | Colonel Carbury | Dr. Stavros Constantine | Dr. Gerard | Dulcie Duveen | Ginerva Boynton | Hori | Judith Butler | Lydia Lee | Miss Bulstrode | Monsieur Bouc | Monsieur Giraud | Nadine Boynton | Rosalie Otterbourne | Sarah King | Sophia Leonides | Stephen Farr | Tim Allerton | Valerie Saintclair | Virginie Mesnard

Adaptational, Homage & Non-canonical
Benoit Blanc | Marta Carbera | Linda Drysdale

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