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

Written By:
Jimmy Palmiotti, Justin Gray
Phil Winslade, Moritat
Phil Winslade, Moritat
Cover By:
Ariel Olivetti