"Legion of 3 Worlds, Book Four"
Return of Superboy (Conner Kent).
*Don't miss this issue as lightning strikes again in the DC Universe! The Crisis of the 31st century continues as a great hero falls and another returns to help Superman and the Legion combat the murderous Superboy-Prime! Meanwhile, the Time Trapper makes his move against the three Legion founders, Polar Boy's bizarre mission comes to an end and Superman makes a shocking discovery that will redefine the terms of this war. *Source: dccomics.com