Story by Paul S. Newman, art by Jack Sparling. In "Deadly Waters," something is killing honkers, and whatever eats their flesh dies too. Turok and Andar discover that a man-made dam is the source of the poisonings, but it is guarded by a hostile cave tribe. Then, the Indians are all out of poison arrows, and that means a trip to the poison berry patch. But, someone else has discovered the power of the poison berries. A caveman learns that the berries kill when eaten. Now, Turok and Andar's secret has become "The Caveman's Secret Weapon."