As promised at the end of “The Army of Living Kryptonite Men”, an adult Lex Luthor, imprisoned, makes good on his promise to track down the Legion of Super-Villains, which must exist, he reasons, if there is a Legion of Super-Heroes. His method of tracking them down is pretty hilarious—he offers to repair all of his fellow inmates’ broken radios, and, while doing so, steals one part from each of them in order to build a future transmitter. Did the radios with missing parts actually work when he was done? We’re never told. I guess it doesn’t matter, since, after building the future transmitter, he quickly secures the means to escape.
“Calling the future!” he says into his transmitter. (I love it!) These were the days, if you don’t remember them, when a lot of Americans still didn’t dial phones. They picked them up and told an operator who they wanted to talk to. So Lex wasn’t behaving that out of character for someone of his time, but still… The whole future, Lex? All of it?