Vincent Townsend Jr, was the first African American to portray a judge on Perry Mason yet he is not mentioned in the credits. Mr. Townsend had a distinguished legal career as the first black judge in Los Angeles County and a roommate of Supreme Court Justice Thurgood Marshall. The judge in this episode is played by Daniel Elam, not Vince Townsend Jr.
The judge in this episode had no speaking lines, meaning there was not one objection lodged by either attorney during the courtroom scenes.
In addition to Ray Collins (as Lt Tragg), the judge in this episode was also African - American. This was another rarity for 1963 TV. He (Daniel Elam) was not listed in show credits. Perry Mason series utilized all ethnicity, races, religions, and peoples.
In the last scene, Perry, Della, Paul and Margaret Layton (Peggy McCay) are standing by Perry's desk, Paul quips, "Things are seldom as they seem, Skim milk masquerades as cream." ...This is a line from the musical HMS Pinafore by Gilbert & Sullivan.