Part 3 of “The Superboy from Mars!” where we find even Krypto is affected.
Part 1 showed Ma and Pa Kent revealing some sort of secret to Superboy, while Part 2 seemed to show a meeting between Dejah and Superboy.

I was quite pleased with how I blended the mist at the bottom with Dejah’s legs and feet . . . and then I covered it up with the story title. Bugger!
Hey, who thought we’d get a sequel to Mash-Up #197 after all this time?