Revealing mistake: "Who Killed the Rest?" The boat we see speeding toward shore explodes - but in the brief shot of it just before the detonation, the substitution of a model is apparent. The two vessels don't look anything alike. (00:02:00)
Who Killed Avery Lord? - S1-E23
Visible crew/equipment: After the woman in the negligeé goes back into her apartment, a crew member's shadow appears on the corridor wall. (00:42:00)
Who Killed Alex Debbs? - S1-E6
Trivia: Sammy Davis Junior's offbeat character, Cordwainer Bird, is an in-joke on the part of scriptwriter Harlan Ellison, who uses the Bird pseudonym to disassociate himself from productions that substantially rewrite/change his stories.