The owner of the wax museum tells a group of guests that the museum is open every day from 9 AM to 5 PM. However, the sign outside the museum says 10 AM to 6 PM.
Andre Bertroux is supposed to be a former Colonel in the Surete nationale. The rank of Colonel did and does exist in the Gendarmerie, but never in the Surete.
Some of the wax figures are actors, and some of them can be seen moving despite their effort to remain completely still.
In his conversation with Bertroux, Bailey refers to a murder he says was committed that night. The murder was, in fact, committed the previous night.