This issue's new cover artist is Pablo Picasso…err…I mean Dick Dillin, with Moldoff still on the inks.
Batman falls through mirror, returns without his memory, looking goofy and causing havoc with crazy new powers (this time different than Superman's!)
Supes and the Boy Wonder manage to go into the mirror, too, where they discover aliens and such that are defeated.
On their return to Earth, the mirror is destroyed for good.
With Jim Mooney still on the main strip, Murphy Anderson brings his polished sci-fi art