George Maharis' eyes can be seen to be unusually dark and solid throughout most of this episode. In order to play the part of a blind man on a short shooting schedule, Maharis asked a doctor to produce special contact lenses that reduced his vision.
This episode was filmed 4 years prior to the August 1, 1966 UT Tower Sniper Incident involving Charles Whitman. Note that a hearse is used as an ambulance. EMS & SWAT came to be across the country after the shootings. In the still pictures, you can see the UT Tower, the UT Longhorn football stadium, the Texas State Capitol building and Brackenridge Hospital.