chunk: After evading a Throg search party, they reach their goal. Thorvald displays a coin-like disc that suddenly turns him into a zombie. Shann knocks the disc away and Thorvald comes back to himself. Now he knows whither they should go. The men build an outrigger canoe and they and the wolverines go to an island, where Thorvald strands the other three.
  Shann seeks to escape from the island, to return to the mainland with the wolverines. But he finds that he sabotages his own work, apparently under the control of another being. He sets a trap and soon finds a small dragon-like humanoid caught in it. The creature can communicate with him and control him telepathically and she takes him to a cavern to meet three other Warlockians, who want to find out who and what he is.