Regard a Mere Mad Rager - S2-E19
Trivia: Even though simply opening the door is the solution, the math problem given yields an imaginary number. In the problem "boing" equals -1 and "flarp" equals 2. Then it asks what is the square root of -1 over 2. It's impossible to get the square root of a negative number since any number times itself yields a positive number.
Trivia: Originally, the new "Ghost Face" mask was meant to be made out of human flesh that was being stretched over the killer's face, hence it distorts and resembles a "screaming face" like the original Ghost Face mask. This idea was dropped relatively early in filming. However, several scenes had already been filmed with the killer for the pilot, so in some shots, the mask is actually a CG model that's been added in over the original. (Though thankfully it's hard to tell which scenes have the digital mask).
Trivia: Lorraine Toussaint is only 9 years older than Morris Chestnut, who plays her son.
Trivia: On a board at a spaceport there are arrivals shown. One of the ships is the UNN Dorie Miller. The U.S. Navy named an aircraft carrier after Doris "Dorie" Miller, a Black mess attendant who heroically leapt into combat during Pearl Harbor. This was the first time an aircraft carrier was named for an African American, and the first time a sailor has been so honored for actions taken as an enlisted man. For his bravery, Miller was awarded the Navy Cross. A fitting tribute to Black History Month. (00:37:55)