Producers liked Richard Kiel's performance as Diablero so much they asked him to portray the Paramafait (Cajun bogeyman) in "The Spanish Moss Murders" the very next week.
The German command of "Sitzen Sie dort", given by dog trainer Schwartz to the Doberman means, "Sit (you) there."
One of the night shots of Chicago is actually Boston Massachusetts, made evident by the Prudential Tower, the John Hancock Tower and the famous Citgo sign in Kenmore Square.
The Native American tribe mentioned in this episode, the Yoshone, is fictional. (Note: the tribe mentioned by Kokchak was actually "Shoshone". However, the tribe and its offshoots were desert dwellers, and did not make their homes in cliffs, as Carl had claimed).