Still searching for the identity of his alter-ego, Superman becomes convinced he is really a criminal mastermind known as the Super-Thief.
Note: This story runs through Action Comics (1938) #371-372 and #374-375.
"No Mercy For Supergirl"
Supergirl finds herself captured and at the mercy of the Avenger from the planet Sarkon. The Avenger charges her with two murders and is going to sentence her to eternal imprisonment in the 5th Continuum Zone.