Through business streets he followed it, where eyes turned to follow its passage and furtive Titanians whispered to each other behind concealing palms, and--as the squalid little shops thinned out--into the suburban residential districts ... finally quite out of the city proper. Out here it was practically impossible to follow the truck without being noticed. Once the city's artificial foliage was left behind, the landscape of Titan's countryside stretched stark and severe so far as the eye could see ... its drab, sandy monotony broken only by an occasional dune, its dull sameness embellished only by the silvery span of roadbed upon which humans must travel to live on Titan. By dropping far behind the roller, Rocky was able to keep it in sight for a little while longer. But then his efforts came suddenly to naught as the driver of the truck--a Titanian--swerved completely off the lead highway and began rolling across the barren desert toward a hummock outlined on the horizon some miles distant. * * * * * Lacking a bulger, Rocky was stopped cold. No way to follow, now. But he waited and watched a while longer to assure himself that the swollen rise of ground _was_ the roller's destination, then strolled back into New Boston. Here he sought the privacy of a 'fresher, and called Bud on the vocoder. Mulligan answered immediately. "Yeah, Rocky? Everything all right?" "Everything's all _wrong_! The confounded roller left the highway and plowed across the gray-and-nasty. Having no desire to be cooked into frizzled beef, I gave up the chase." "That's tough, Chief. What do we do now?" "I," said Rocky, "stay right here. You load a couple of bulgers in a roller and come charging back here as fast as you can. I _still_ want to find out what Grossman's hiding in those hills that needs to be tied up with twenty-foot bands of forged steel." "O.Q." said Bud. "Sit tight. I'll pick you up in three shakes." "Make it two!" "One," chuckled Bud. "I'm practically on my way now." He was as good as his word. Rocky had only finished one cigarette when a blue S.S.P. roller came tearing up the highway from Fort Beausejour. Bud jumped out, bulger-clad and carrying a second protective suit for his comrade. "Here you are, pal. Where do we go from here?" "Out of town on the east highway. I'll show you. A hill rising out of--Hey, wait a minute! Who's driving this crate?" Bud looked embarrassed. "Oh--she is!" "She?" "Miss Graham. She--" "--refused," chimed in Lynn Graham, "to be left out of it. Indeed I did. Captain Russell, you ought to be ashamed of yourself, deceiving us the way you did. When the Sergeant, here, told me who you _really_ were, and what you were doing here, I almost _died_ with excitement! And to think that you, a Captain in the S.I.D., pretended to be a mythologist! It's the funniest thing--"