 Upon learning 
that the Wozzle only attacks in bright daylight or total darkness, Alan deduces that the Wozzle is actually the three criminals themselves, made invisible by their own psychokinesis.On this premise, he exposes them to the locals; whereupon he and Leonard use Klugarsh's telepathic technique to trick the trio into surrender.Here, they are commanded to withdraw from Waka-Waka to their own world of Nafsulia, by Rolzup, the Martian High Commissioner (himself invited by Alan).