Bernstein and Plastino remove Superman’s kryptonite weakness in Action 291 (Aug. 62).
We see a suspiciously coloured red ray hit Clark Kent, just before Lois tosses him a chunk of kryptonite. To his surprise, it has no effect on him at all.
As the story goes on, he finds himself weakened by diamonds, and later gold. His vulnerability keeps changing. Eventually the red ray is revealed as having shot red kryptonite at him, which had the effect of altering his weakness.
A bit too much red kryptonite this year.
Mr. Mxyzptlk sets his sights on Supergirl in this Siegel and Mooney story.
Supergirl comes to the aid of a crashing airforce jet, only to have the pilots turn into Bizarros. This is due to Mr. Mxyzptlk, who further amuses himself by turning all of Midvale into Bizarros.
When Mr. Mxyzptlk’s romantic gestures towards Supergirl are rebuffed, he attempts to win her over by bringing her parents back to life. Zor-El and Alura seem to be genuinely there, not just apparitions created by the imp. To Supergirl’s horror, Zor-El givse his permission for the marriage.
Supergirl is at the altar when her father proposes a pre-wedding toast. He has spiked the drink with truth serum, and forces Mxyzptlk to say his name backwards. This causes him to vanish, along with the effects of his magic – specifically, Zor-El and Alura.
But were they really dead? The story never clearly states that. Laying the groundwork for what is to come.