Ralph mentions in a conversation with Dr. Beale that he attended MIT as a freshman at the age of fourteen.
Ralph: Man can not live by worms alone!
Morrison: I'm trained as a doctor, not as a faith healer.
Samuels: He's not dead until I say he's dead!
Samuels: You still don't forgive me for leaving you?
Paxton: Oh, I forgive you, sure. It's a lot harder to forget.
Ed Flanders, William Daniels, Denzel Washington, Kavi Raz, Christina Pickles, and Cynthia Sikes do not appear in this episode.
This episode aired on Monday 4th July 1983 at 10:30pm in the UK by Channel Four.