Expression error: Missing operand for >."Sight Unseen" is the Expression error: Missing operand for >.tenth episode of [[{{{theme}}}|{{{theme}}}]]. It Expression error: Missing operand for >. on January 10, 1991. [[Category:{{{theme}}} Episodes]] [[Category:Season {{{season}}} ({{{theme}}})]]
Synopsis
An invisible man gets into Star Labs, and releases a neurotoxin with Tina inside the lab. Then he starts killing scientists who worked on the project. Flash must find the invisible man and save his friend.
Appearances
Characters
Main/Featured Characters
Villains
Other Characters
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Locations
Trivia
- It was Robert Shayne's final TV role.