This month, Superman is tested, fails, and becomes half as effective. Before I go on, this issue is kind of special to me as, for a long time, this was my oldest Superman issue I owned, and is still the only Superman issue I have ever bought in Metropolis, Illinois (the prices in that store are terrible). Anyway, Superboy gets sent to the Phantom Zone and is replaced by an evil impostor (and somehow Krypto learns how to talk), Superman has to fight a sentient costume, Denny O’Neil and Neal Adams tell their first dark and moody Batman story, and Green Lantern has to take on the combined might of Star Sapphire and Sinestro. Hal also reveals to Carol Ferris that she is Star Sapphire, which she doesn’t believe.