When Giles heard about the out-of-date map in the dead man's pocket, he was very excited. He told Beverley the whole story of the stranger in the mist. Beverley was very interested.
`Do you remember anything about a map, Parry?' he asked his servant.
`I certainly do, sir,' said Parry. `It was a very old map. Mr Roberts still has it, I believe.'
`Then will you please send a message to Mr Roberts for me?' said Beverley. `Give him my best wishes, and ask him to come and have coffee with us. And ask him to bring the old map with him, please.' Parry hurried away to carry out his master's orders.
`I have the map that the old man gave me today,' said Giles. `It is still in my coat pocket. I'll go and get it.'
He fetched the map and spread it out on the table. The two men studied it carefully. In the mist Giles had not noticed anything strange about the map. But in the brightly lit dining-room the map looked very unusual indeed. It was on thick paper that looked yellow with age. The writing was very old, with long Ss that looked like Fs.
`Look at that!' said Beverley, pointing to some writing at the bottom of the map. `Madog ap Rhys, 1707.'
Just then Mr Roberts arrived. He listened carefully to Giles's story. Then he took a map out of his pocket. It was exactly like the map that lay on the table.
`I've always wondered how the dead man got that map,' he said. `It's very unusual. There is only one other copy, and that's in the museum in Caernarvon.'
`And who was Madog ap Rhys?' asked Giles.
`He was a rather strange, lonely old man,' said Mr Roberts. `He lived alone on the hillside and spent most of his time praying. He died in 1720. Of course that was before the landslide destroyed the path to Adwy-yr-Eryon. When- ever there was a mist, Madog ap Rhys walked among the hills in his long dark cloak, with his dog beside him. He drew this map. He always carried a copy about with him, to give to travellers who had lost their way. Some local people say that his spirit still walks among the hills, searching for lost travellers. But that's only a story. I don't take it very seriously.'
`How sad!' said Giles, after Mr Roberts had drunk his coffee and left. `Madog ap Rhys was a good, kind man. He only wanted to help. But he led poor Stevenson to his death, and he almost killed me.'