Why change Christie's original ending?
Such a classic, classic book and an ingenious premise by one of the all-time great crime writers. So why change her ending?
The killer certainly never revealed themself on the island nor talked to anyone as they were hanging. The ending of the book was a lot more mysterious as the ten murders on an island with no killer wasn't actually solved. There was even another chapter set in Scotland Yard where they were baffled and reveal a detail about the hanging chair that is one of the greatest details in the book.
Only when a letter was sent much later, featuring a forensic confession, was the killer revealed.
So much ingenious detail of how the mystery was engineered was just wiped out in favour of ponderous slow-motion scenes. A real shame as such an clever book should be portrayed as such, instead of being filmed as if Christie had only put a tenth as much thought into the plot as she actually did.