1966 National Periodical Publications
The strange gas of Dr. Hypno left its victims with strong visions of gigantic monsters. These visions were so real that the individuals often died of fright. Batman suddenly found himself trapped in a cloud of such gas. His senses reeled, but his mighty will power fought the illusion, and he was able to shake his mind back to reality. Dr. Hypno had underestimated the endurance of the Batman.
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