After seeing Caleb & Tess make love, Elizabeth teams with Joshua to destroy Caleb and shares her news about the hot spring. Rafe & Alison meet Ian, Lucy & Kevin at the hot spring. Lucy tells them the legend of the healing pool and Ian takes a sample of the water to analyze it. He discovers Caleb's ""water"" is a combo of the healing pool water mixed with Chris's vampire serum. They wonder if the healing pool water without the serum could cure a vampire. While making love, Caleb tells Tess he feels human again. Caleb then bares his fangs but doesn't bite her. Later, Caleb goes to the hot spring, staring into the water.