'EARTH CALLING,' Part Four Valla has delivered a crippling blow to the oil industry. Now she faces her first real challenge in the form of Samael. He might be the son of the Angel of Death. Or he might just be an insane former underwear model. But what's for certain is he possesses the most powerful weapon on the planet, and he's bringing it to bear against Valla. The manure is about to get real, folks.