Ming's missiles threaten to destroy Prince Barin's kingdom.
Flash rescues Dale and Dr. Zharkov from a death ray.
Flash and friends receive warm welcomes on Earth.
Flash turns the Martians against Ming.
Ming uses his bat wings to escape captivity.
Ming and Azura prepare a trap for Flash and Dr. Zharkov.
Tree People capture Dale and force him to serve their god.
Azure escapes, regains her power and orders Flash captured.
Flash imprisons Azura and tests his magic abilities.
Flash learns the secret of Azura's magic.
Flash and Ming vie for the Tree People's support.
Ming sends a bomber to capture Flash and Dr. Zharkov.
The Clay People misinterpret Flash's attempt to free them.
Clay People capture and enslave Flash and his friends.
Azura forces Flash to land in the Valley of Desolation.
Martians open fire on Flash (Buster Crabbe) as he nears Mars.
Ming flees from Thun as Flash and friends return to Earth.
Stars Buster Crabbe.
Prince Barin persuades Aura to help them escape.
Dale and Princess Aura are being held captive in an electrically trapped room.
Flash uses an invisibility machine to rescue Vultan.
Flash and his friends travel to Ming's palace with Barin in a daring attempt to rescue the princess.
Zharkov manages to restore Flash's memory.
Flash and his friends are captured by the rock men and must escape.
Ming impairs Flash's memory and sends him to the Fire Dragon.
Flash and his friends attempt to use the N ray to neutralize Ming's power plant.
Flash fights his friend, Prince Barin, and the Orangopoid.
Flash uses the untested thermal control to combat Ming's fiendish invention.
Vultan threatens Flash with destructive devices.
Vultan demands Dale renounce Flash forever.
Flash and Roka disguise themselves as guards and return to Ming's palace to rescue Dale and Zarkov.
Flash and Roka capture a Ming ship, infiltrate Ming's palace in disguise and attempt to rescue Zarkov from the death ray in the arena.
Ming sends Torch and a mechanical army to stop Flash when he hears that Flash has discovered an antidote for the death dust.
Flash aids Dale when Aura blocks the air supply to Kala's palace.
After Flash is rescued and Barin discovers an antidote, everyone goes to collect the antidote and is attacked by Ming's men.
Flash faces deadly King Kala and his Shark Men.
An antidote for the Purple Death is discovered in the unbearably cold land of Frigia. Flash heads there with one of Ming's shops in pursuit.
Flash battles deadly Thun and the Lion Men.
A mysterious plague called the Purple Death ravages the earth.
Flash (Buster Crabbe) battles enormous apelike creatures.