The sequel to 2019's Knives Out, Glass Onion: A Knives Out Mystery, was released to both critical and commercial success in December 2022. The Netflix film had an exciting premise that prompted a 97% positive rating from 474 critics and a 92% approval rating from over 25,000 verified viewers. Despite breaking into the platform's Top 10 Most Popular Films only last week, it is now the fifth most watched film.

Following the success of the first film, the series's creator, writer, and director, Rian Johnson signed a contract with Netflix to develop two more films and, after Glass Onion, is contractually obligated to create one more film for the platform. In December, following Glass Onion's release, the highly sought-after director stated that he was "just starting to figure out what the next one is going to be." Now, only a few weeks after the film's release, Johnson has confirmed he is already writing the script for the next installment.

Johnson made this revelation during an interview with Variety where he discussed his attempts to recreate the genius of the Agatha Christie-detective thrillers Murder on the Orient Express and Death on the Nile.