Three Act Tragedy, an Agatha Christie classic, begins at a cocktail party hosted by celebrated actor Sir Charles Cartwright, where Reverend Stephen Babbington chokes to death after sipping his drink. Though suspicious, no poison is found, and the death is ruled natural. Soon after, Dr. Bartholomew Strange dies of nicotine poisoning at his own dinner party. Hercule Poirot investigates and uncovers a chilling connection between the deaths. As clues emerge among the guests—including Cartwright's beautiful fiancée Egg Lytton Gore—Poirot realizes the murders were staged like a theatrical performance, with the killer cleverly concealing one murder behind the appearance of another.