The game that The Ghost is playing (and apparently smashing the high score of) in the arcade is Major Striker.
Barry: What made you do it? Why did you become the Nightshade? Powell: Someone had to.
Powell: (indicating car) Get in. Barry: No way. Bad for the image! (speeds off)
The mural on Nightshade's garage changes with the times - in the 50s, it praises the wonders of atomic power. In 1990, it states "Our world is in your hands - love it or lose it."
We learn Bellows' first name is Tony.
First appearance of Julio's girlfriend Sabrina (played by ER's Gloria Reuben).
The title of this episode is a famous quote from British philosopher Gilbert Ryle which first appeared in his 1949 book The Concept of Mind. The phrase is intended as a derogatory description of Rene' Descartes' concept of mind/body dualism.
The Ghost: I control the horizontal. I control the vertical. The Ghost's boast to the citizens of Central City is a direct allusion to the credit sequence from the TV series The Outer Limits.
Nightshade: ...an old brewery on Shadow Lane... The Ghost's hideout is on Shadow Lane, a subtle reference to the pulp heroes of yore, such as The Shadow.
S 1 : Ep 21
Aired 5/18/91 (45:29)
S 1 : Ep 20
Aired 5/11/91 (45:11)
S 1 : Ep 19
Aired 5/4/91 (45:24)
S 1 : Ep 18
Aired 4/27/91 (45:54)
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