Supergirl #80 (1996)

Written by Peter David;
ART by Ed Benes and Alex Lei;
COVER by John Romita and Jose Marzan
The final showdown between Supergirl, Kara and Xenon! Will Supergirl manage to prevent Xenon from breaking free? Will Kara catapult herself through time so that her rocketship avoids falling through the time rip in the first place - thus sentencing her to future death? Lives end and begin in this final chapter of Supergirl.