There are blank pages in Poirot's newspaper, revealing it to be a prop.
The closed captions have Poirot saying "I'm an American citizen" rather than "Belgian citizen "
when arguing with the customs officers.
On the column placed on the east pier, by the side of Agios Nikolaos Fortress, at the entrance of the Mandraki harbor, at the time in which the story is set, there was not a hind, but the Capitoline she Wolf suckling the infants Romulus and Remus.
In the final scene, as the car taking Poirot to the train station departs, equipment is reflected in the shiny red metal.