"Who is Superwoman?, Part 4: Mistakes"
Green Shield 22. Continued from Action Comics (1938) #876 and continues in Superman (1939) #687.
*Following last issue, Supergirl must decide what to do with a shocking piece of information that casts all of "New Krypton" in a new light! Meanwhile, Lois begins putting together clues regarding the body found in Metropolis Harbor and the strange message it was broadcasting. *Source: dccomics.com