Jonny Harris is a special guest as his Murdoch Mysteries character George Crabtree.
This episode is credited to director "Alanis Smithee". The name "Alan Smithee" was used for decades on films and TV shows when the actual director had disowned the project for some reason and a director credit was required.
While the Welcome to Caledon sign says a population of 15,545, the entirety of Peel County had 23,896 on the 1921 Canadian Census.
The story for this episode was probably inspired by the kidnapping of the Lindbergh baby In 1932.