Overview
Copperhead is caught in the crushing grip of The Robot.
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: Double Cross
Mysterious Doctor Satan: The Monster Strikes
Mysterious Doctor Satan: Highway of Death
Mysterious Doctor Satan: Double Jeopardy