On November 21, 2015, the film was determined to be directed by Kenneth Branagh, and he also played the role of Detective Poirot in the film.
On May 3, 2017, the full lineup of the film appeared on the cover of "Entertainment Weekly", and the film party announced the makeup photos and stills of the leading actors. On June 2, the film released its first trailer and poster, and announced that it will be released on November 10, 2017 in North America. On July 16, the film crew released a set of portrait photos of the protagonist.
On September 24, 2017, the film released the "Suspect" version of the trailer. On October 9th, the film party announced the full poster; on the 16th, the film party announced that the release time in mainland China and North America would be November 10th, and announced the Chinese version of the poster; on the 19th, the film released a "suspect" TV Trailer; on the 31st, the film crew announced that Kenneth Branagh, the film director and detective Poirot, will participate in the Chinese premiere in Beijing on November 6, and will be invited to participate in the promotional film of the forum hosted by the British Embassy. On November 1, the film producer released the "Gorgeous Departure" version of the TV trailer.
