Superman #11/1979

In "Das fliegende Kittchen," Superman once again defeats Metallo, locking him away in a newly constructed high-security prison for super-criminals. Carl Draper, the inventor smitten with Lana Lang, harbors a deep resentment toward the android villain and, using energy modules and the Parasite’s abilities, drains Metallo of his powers entirely—leaving the once-feared foe powerless. But as the dust settles, strange new forces stir, and the balance of power begins to shift in ways no one expected.

Falke and Falkgirl return to Earth to find their museum directorship taken by the enigmatic Mystoman, a man with a teleporting cloak and a dangerous obsession: the legendary Da Vinci energy pistol. With Mavis Trent caught in the crossfire, the duo must stop him before the artifact falls into the wrong hands.