Instead, Poirot holds court in a freezing train tunnel with the suspects comically arranged to reference da Vinci's "The Last Supper."
When it does come time for Poirot to present his theory of what really happened, he lines everyone up like the disciples in Leonardo’s “The Last Supper” but fails to articulate how he untangled the far-fetched plot.
When Poirot gathers all his suspects together to explain how the murder was done, our twelve characters are arranged at the table like disciples at The Last Supper.
As a director, he overcompensates for the staid, inert material with flashy, distracting visuals, from a dizzying tracking shot as Poirot walks the length of the train to a lineup of suspects that mimics Leonardo da Vinci’s The Last Supper.
As the film reaches its denouement, Poirot has the remaining 12 passengers seated at a long table --- audible audience snickers as it has the look of "The Last Supper" --- in what is a gripping conclusion, and a shocking surprise.