Right before the trial scene, stock footage from 1962 is used, showing Raymond Burr with his old hairstyle. His hairstyle in the series changed in late January 1966 from a pompadour to a shorter, straighter haircut.
Jodhpur is located in India. The character of the king is an Arab. Arabs are from the Middle East which is quite distant from India. These areas share little in similarity and none in origin, language or culture.
The substance used to obtain an impression of the tire tread left at the murder site was too viscous to use for that purpose. Whatever substance is used. It has to be thin enough to run
into every crack and crevice of the impression it is supposed to preserve. What we see here
would smash the impression flat. And the investigator goes so far as to take a trowel and
push the substance onto the impression. This assures the total destruction of the print.
The Harry Lannon character asks if Della is enjoying her "glimpse of the hoi polloi" as though it is a reference to the noteworthy and wealthy guests at a gathering. The term "hoi polloi" actually refers to ordinary people, not the elite.
Hamilton Burger describes the pipe wrench as "the weapon that crushed the skull of the decedent" (Jerome Klee), but when Klee was struck on the head from behind, there was not a mark on him as he lay on the ground. A blow hard enough to crush his skull would have left an obvious injury on the back of his head.