Story: "Mark of Cain Part One" (22 Pages)

Credits:

Kelley Puckett (plot, script)
Damion Scott (pencils)
John Floyd (inks)
Todd Klein (letters)
Greg Wright (colors)
Darren Vincenzo (edits)

Feature Character:

Batman (next in Detective Comics #734)

Guest Stars:

Batgirl II
Cassandra Cain (first appearance, also appears in flashback; next in Detective Comics #734)

Supporting Characters:

Oracle
James Gordon
Renée Montoya (all three next in Detective Comics #734)
Mackenzie Bock

Villains:

David Cain (first appearance, also appears in flashback; next in Detective Comics #734)
Two-Face (next in Detective Comics #734)

Synopsis:

Batgirl has failed Batman, and people under her protection have been killed by Two-Face. Meanwhile, Barbara Gordon has a new helper who turns out to be the daughter of the mercenary Cain, preventing her father from killing James Gordon.