Action Comics #705 1994

Action Comics #705 features Superman's increasingly erratic behavior as he investigates a doppelgänger, believing Mister Mxyzptlk is responsible. He clashes with the Metropolis SCU, but Mxyzptlk denies involvement, revealing Brainiac's escape and true manipulation. This issue is notable for the first appearance of serial killer Ramsey Murdoch, who later adopts the alias of Savior, making it a key moment in the "Dead Again!" crossover storyline.