Raymond Burr's right arm is not seen in this episode as it's carefully hidden under a large suit. The show's producers used the technique to hide an injury at the time. (In some scenes, he uses only one arm; in others, both arms are hidden under his larger-than-usual outfit.) Fans at the time assumed he'd gained weight. Historians say Burr injured his shoulder in early 1965 during a helicopter maneuver in Vietnam; the philanthropic actor was well known for his support of the troops (and also veterans).
In this season, the production people seemed to be trying make the sets more interesting by adding light and shadows. Most episodes have "sunlight" shining through the courtroom window and casting a shadow on the back wall. But in this episode they included light shining through the Venetian blind in Dodson's office and "sunlight" shining through the terrace window in Perry's office, causing a very dramatic shadow on the wall opposite Perry's desk.