Secret Barrier X (Perry Rhodan No. 16)

128 pp. Thora, beautiful Arkonide military commander, is still in the hands of the rebels against Perry Rhodan's New Power government. Perry takes a spaceship and attempt to rescue her, only to realize that the ship he has flown has no radio code for the secret Venusian base. Accordingly, the super computer turns on all Venusian defenses, effectively sealing the planet against any further landings. Perry and his small crew must fight on land - a land swarming with Venusian monsters and storms.