Overview
Copperhead hides in a box about to be delivered to Doctor Satan's new hideout. Doctor Satan suspects a poison gas booby-trap and has the still sealed box incinerated.
Part of The Mysterious Doctor Satan Collection
Mysterious Doctor Satan: Return of the Copperhead
Mysterious Doctor Satan: Thirteen Steps
Mysterious Doctor Satan: Undersea Tomb
Mysterious Doctor Satan: The Human Bomb
Mysterious Doctor Satan: Doctor Satan's Man of Steel
Mysterious Doctor Satan: Double Cross
Mysterious Doctor Satan: The Monster Strikes
Mysterious Doctor Satan: Highway of Death