After the release of Murder on the Orient Express, Kenneth Branagh expanded on his Agatha Christie cinematic universe with two more films. The latest film in this universe is A Haunting in Venice, which adapts Agatha Christie's Hallowe'en Party. Kenneth Branagh brings to life the iconic Belgian detective Hercule Poirot in all three movies. Poirot is a classic detective in fiction and has featured in over thirty Agatha Christie novels.
Source:https://www.cbr.com/agatha-christie-kenneth-branagh-adaptation/