Death on the Nile, 2022. Director Kenneth Branagh..
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Tiffany & Co designed jewelry worn in the film, most prominently featured is Linnet's diamond necklace. The necklace features a replica of the Tiffany Yellow Diamond, one of the largest yellow diamonds ever discovered. First discovered in South Africa in 1877; as of 2022, it has only been worn publicly by four women. At the 1957 Tiffany Ball, it was worn by Mrs. E. Sheldon Whitehouse. It was worn by Audrey Hepburn for Breakfast at Tiffany's (1961) publicity photos. Lady Gaga wore the diamond at the The Oscars (2019). Beyoncé wore the necklace in a campaign with Tiffany in 2021.
In both this film and Murder on the Orient Express (2017), Poirot shows signs of being obsessive compulsive (Letitia Wright's character even calls him "obsessive" at one point). His need for balance and symmetry is shown when he sends back one of the desserts so that he has an even number and when he straightens the feet of one of the victims. Obsessive-Compulsive Disorder (or OCD) is considered a relatively new discovery, but the term was actually coined in 1877 by German psychiatrist Carl Westphal.