Story: "Sinestro Corps Epilogue: The Alpha-Lanterns, Part I" (22 Pages)

Credits:

Geoff Johns (plot, script)
Mike McKne (pencils)
Andy Lanning and Marlo Alquiza and Cam Smith (inks)
Jo Smith (colors)
Rob Leigh (letters)
Adam Schlagman (assistant edits)
Eddie Berganza (edits)

Feature Character:

Green Lantern (Hal Jordan; in flashback in between Green Lantern Corps Vol. 2 #20 and issue #27)

Guest Stars:

Boodikka (in between issue #27, pages 18 and 19; also in flashback in betweeen #25 and issue #27)
Hannu
Laira
Graf Toren
Tomar-Tu (all four in flashback in between issue #25 and issue #27)
Salakk (in flashback in between Green Lantern Corps Vol. 2 #20 and issue #27)
Morro (in flashback following issue #12; next in Green Lantern/Sinestro Corps: Secret Files #1)
Green Man
Chaselon
Kraken
Varix (all four in between issue #27, pages 18 and 19; become Alpha Lanterns in this story)

Supporting Characters:

Green Lantern (John Stewart; in flashback in between Green Lantern Corps Vol. 2 #20 and issue #27)
Guardians of the Universe (in between issue #27, pages 18 and 19; all also in flashback in between Green Lantern Corps Vol. 2 #20 and issue #27)
Jillian Pearlman (in flashback in between issue #20 and Final Crisis: Rage of the Red Lanterns #1)

Villains:

Sinestro (in flashback in between issue #25 and issue #27)
Amon Sur (in flashback in between issue #25 and issue #27; dies)
Lyssa Drak (in flashback following issue #25)

Other Characters:

Ke'Haan's family (first appearance; in flashback; all deceased)

Comment: Pages 1-3 take place in between issue #27, pages 18 and 19. The rest is a flashback to "yesterday" immediately preceding the events in issue #27.