"Good Night, Central City" is the twentieth episode of The Flash. It aired on May 4, 1991.


Harry Milgrim uses an ultra-frequency transmitter to put everyone asleep so he can loot Central City, but it's up to "The Flash" to find the device before the entire population dies from a sleep-induced coma.


  • A Central City Picture News newspaper make an appearances confirming their existence in this universe.
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