Supergirl (2005) #17

Written by Joe Kelly & Mark Sable Art by Alé Garza & Marlo Alquiza

Bloodletting

Kara imagines what it is like to be on Earth that is infected by the phantoms from the Zone during her absence in space. The sun has turned red, and all her friends are attacking her. She uses the crystals from her body to protect herself, and cures Robin by stabbing him with one. He tells her to look for Superman. They meet, and discuss the problem, deciding that the only way to end it is for Kara to kill him with a crystal. But they are interrupted when another Supergirl appears, who claims to be the real one.