All-Star Western # 15 (DC Comics 2013)

Dr. Arkham and Jonah Hex vs. Dr. Jekyll and Mister Hyde.
Has Dr. Jekyll's formula been fused with the Black Diamond?
Plus: In the backup story, Tomahawk teams up with Tecumseh to turn a last stand into a victory.

All-Star Western # 15 is written by Justin Gray and Jimmy Palmiotti with art by Moritat and Phil Winslade and a cover by Ariel Olivetti.

All-Star Western # 15 is a 40 page comic book in full color and rated T+.