Over Sea, Under Stone

When Rufus returns to the Grey House alone, Simon and Jane realize that Barney is in danger. The dog alerts them to something strange happening near the harbor, where Mr. Hastings and the Withers siblings are on their way to Kemare Head with a subdued Barney. The boy finds himself hypnotized by Hastings’s mysterious powers of persuasion, but he suddenly wakes up when Rufus starts howling. Hearing this, Barney runs to his siblings and they all flee together, pursued by Hastings and his acolytes. 

The children hide in a field and watch as their enemies prepare to go to Kemare Head. Simon convinces his siblings to move around the cliff while the tide is out so that they can find the other entry to the cave and get to the grail first. As they make their way through the rocks, they encounter a deep pool of water that they have difficulty crossing. When they finally reach the cave, they decide to split up. Jane stays outside and holds one end of a fishing line while the boys hold onto the other end and enter the cave, carrying matches.