Supergirl Vol. 3: Sanctuary (The New 52)

In these stories from issues #13-19, H'El convinces Kara that he intends to return them to Krypton prior to its destruction. When presented with the opportunity to return home, Kara fails to see that H'El's plan will leave the Earth in ruins. Wonder Woman and The Flash must show Kara in the truth before it's too late!