Concluding the 2-part BLACKEST NIGHT tale of Superboy-Prime! The Black Lanterns have forced Prime to face his deepest and darkest fears, but what - and who - are they? And how will Superboy-Prime strike back after this devastating attack? Plus, Conner Kent faces off with Superman's greatest enemy in an exciting co-feature by Geoff Johns and Francis Manapul. That's right: Superboy confronts Lex Luthor!