S2, E13: "Mr. Kelso," an intricate mechanical brain, is used by crooks to plot crimes so perfect, so complete, that the police--and even Superman--are baffled in the drama, "The Machine That Could Plot Crimes." Then the mechanical marvel threatens to reveal that Clark Kent and Superman are identical persons. There's a thrilling climax as Superman in his turn uses the machine to plot the destruction of the evil doers.