The Flash (Volume 1) with a cover date of September, 1964.
Synopsis for "Our Enemy, The Flash!"
Al Desmond, formerly the criminal Mr. Element / Dr. Alchemy, has reformed and hopes to marry. But Professor Zoom arrives from the future and needs his help, so he hypnotizes him into becoming a crook again, and only the Flash can stop them both.
Appearing in "Our Enemy, The Flash!"
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Notes
- This issue is reprinted in The Flash Archives Vol. 6.
Trivia
- Second appearance of Reverse-Flash, who last appeared in The Flash #139. He next appears in The Flash #153.
- Zoom's inexplicable psychic powers in this issue are never explained.