A Haunting in Venice Biggest Changes from Book to Movie

https://www.cbr.com/haunting-in-venice-biggest-changes-from-book/

10. The Séance Never Happens
In A Haunting in Venice, the main characters meet for a séance where Joyce Reynolds tries to contact Rowena Drake's daughter. In Hallowe'en Party, none of this happens.

9. Joyce Reynolds Isn't a Psychic
Michelle Yeoh stars in A Haunting in Venice as Joyce Reynolds. Joyce Reynolds is a renowned psychic whom Rowena Drake hires to try to contact her daughter, Alicia. But in the original Agatha Christie novel, Joyce Reynolds is a thirteen-year-old girl who says she once witnessed a murder. However, no one takes Joyce's comment seriously until she's murdered.

8. Alicia Drake Isn't a Character in Hallowe'en Party
Séance takes place because Rowena Drake wants to speak with her daughter, Alicia. Alicia passed away after a prolonged illness, and her tragic death still haunts Rowena. Yet in Hallowe'en Party, Rowena Drake doesn't have a daughter. She is a widow who lives alone and hosts many parties and events for the people in the town.

7. Joyce's Death is Different in Hallowe'en Party
In AHIV Joyce Reynolds dies after the killer pushes her from a balcony and Joyce lands on top of a statue. But in Hallowe'en Party, Joyce's death is completely different.

Thirteen-year-old Joyce dies when everyone is playing snapdragon, Joyce is murdered in the room that holds the bowls for the bobbing for apples game. Someone drowned Joyce, holding her head underwater.

6. Nicholas and Desdemona Aren't Siblings
In AHIV, Nicholas and Desdemona Holland are half-siblings and assist Joyce Reynolds in her séances. They work the deceptions and tricks that Joyce uses when pretending to contact the dead.

But in Hallowe'en Party, there is no Desdemona. Desmond is a character in the book and is friends with Nicholas Ransom. They are two teenagers who were at the Halloween party where Joyce was killed, and Desmond and Nicholas later assist Poirot with his investigation.

5. Leopold's Fate Changes
In Hallowe'en Party, the only character named Leopold is Leopold Reynolds. He's Joyce Reynolds' younger brother. In AHIV, the twist at the end reveals he was blackmailing the killer. Leopold blackmails the killer in Hallowe'en Party as well, but with different consequences.

In AHIV the blackmailing allowed Leopold to save a lot of money and pay for bills since Leopold's father struggled after the war. In the end, Leopold agrees to use the money to help the Holland siblings travel to the US. But in Hallowe'en Party, Leopold's end is much darker, as he eventually becomes another victim due to the blackmail.

4. Ariadne Oliver Never Tries to Trick Poirot
AHIV provided more detail about Ariadne Oliver and Poirot's relationship. The film explains Ariadne used Poirot as inspiration for a book, and she claims she's the reason why Poirot is famous. In AHIV, Poirot realizes Ariadne invited him to the séance to trick him and use him for another book.

Yet in the Agatha Christie novels, Ariadne Oliver mentions more than once that she doesn't use her friends and family in her stories. She also never tries to deceive the Belgian detective. In Hallowe'en Party, Ariadne Oliver goes to Poirot for help after the murder of Joyce Reynolds, and the two work together to find the truth.

3. Olga Seminoff's Story Changed Completely
In AHIV Olga Seminoff is is a nun who took care of Rowena's daughter during her illness. In Hallowe'en Party Olga has a completely different story.

She was an au pair girl who went missing before the events of the book. She took care of a rich elderly woman named Mrs. Llewellyn-Smythe, who was Rowena Drake's aunt. Mrs. Llewellyn-Smythe left Olga all her money in her will once she died, but after people accused Olga of forging the will, Olga Seminoff mysteriously disappeared.

2. The Killer Didn't Act Alone
In AHIV audiences find out Rowena Drake is the killer. Rowena killed her daughter Alicia after poisoning her for a long time to try to keep Alicia away from Maxime Gerard, Alicia's ex-fiancé. But in the Agatha Christie novel, the killer doesn't act alone.

Rowena Drake was in love with a gardener named Michael Garfield, and they planned the crimes together. Their first crime wasn't the murder of Alicia Drake, since she isn't a character in Hallowe'en Party. Instead, they killed Olga Seminoff to keep Mrs. Llewellyn-Smythe's money for themselves. But after Joyce claims to have witnessed a murder, they believe Joyce is talking about Olga's murder. In desperation, Rowena kills Joyce.

1. Hallowe'en Party Doesn't Happen in Venice
AHIV film takes place during a séance gone wrong at Rowena's home in Venice. But events of Hallowe'en Party happen in a small English village called Woodleigh Common.

In Hallowe'en Party, Ariadne Oliver is a guest at a friend's house. She takes part in the preparations for the Halloween party at Rowena's house where Joyce is killed. Ariadne then asks Poirot to in investigate.