Officer Besner is a non-canonical character created for the 2022 Kenneth Branagh adaptation of Death on the Nile. He is first officer of the Karnak.
Besner appears in several scenes. He is seen, for example, with Captain Mahmoud welcoming the passengers when they arrive on board. There is also a scene where he is shown keeping score for Marie Van Schuyler and Windlesham who are playing shuffleboard. He is not present at the dance scene (presumably someone has to remain on the bridge) as the Captain is at the party. Besner is also among the crew who search the guest berths for the missing necklace. At the end of the film Besner is among the boat crew (all those who are credited) who fall in on deck to farewell to the guests as they disembark.
Officer Besner is portrayed by Crispin Letts.