The Death and Return of Superman #4

Plot

Collects Action Comics (1938-2011 DC) #689-692, Action Comics (1938-2011 DC) Annual #5, Adventures of Superman (1939-2006) #503-505, dventures of Superman (1939-2006) Annual #5, Green Lantern (1990-2004 2nd Series) #46, Superman (1987-2011 2nd Series) #80-83, and Superman The Man of Steel (1991-2003) #24-26.

As an alien warship approaches Earth, the world still doesn't know which-if any-of the four replacement Supermen is the real Man of Steel. Each has a claim to the title, but two show their true colors when they battle the others for supremacy. Meanwhile, the true Superman-restored by a Kryptonian regeneration matrix-is plotting his return!