Tickets to Paradise

Rog Tanlu nodded. "Of course I didn't call it that. But I happened to overhear a conversation between you two, with the audio-visiscope, some days ago, and thereby learned the name you have for it. A very appropriate name! I also learned that neither of you had ever seen it. So now, if you will accompany me, I will take you to my laboratory—or rather to what still remains of my laboratory—and show you the Ice Stone. That should simplify things, and may help us to solve the problem of this impending migration—a problem which was forced on me due to certain interference, as I will later explain."