We were just turning, after going a few hundred yards farther, when a most interesting thing appeared. The cliffs hung over rather, and were made of red sandstone, and very steep; but ahead of us was a ledge of rock half-way up the cliff, and on it a mysterious little house made of bits of old boat and painted with tar. It was extraordinary to see such a thing in such a lonely spot, and Cornwallis, who is rather suspicious, owing to the War and being a Boy Scout, wondered if it was all right. Because, if you are once a Boy Scout, as Travers minor pointed out, you are always a Boy Scout, and though you may not be scouting in a professional sort of way, yet, if anything peculiar happens, or you get a chance of doing good to the country, you must instantly look into it.
So Cornwallis decided to go and examine this queer shed, and I went with him. The door was open, but we saw no signs of life. It was a solid building made of heavy timbers, and there was a padlock on the door. Inside was a pleasant smell of tar and cobbler's wax and fish. It seemed to belong to a mariner of some sort; but, on the other hand, what mariner could possibly want to make his house in such a weird spot? There was no bed or washing basin or chest of drawers, to show that the stranger lived here, but there were many interesting things, including a lobster-pot, a telescope, and a large lantern of the sort used on board ship.
I saw nothing peculiarly suspicious, but Cornwallis did. From the first he took rather a serious view of it, and when he found a green tin full of petrol, his face went white, and he said it was Fate.
I said:
"What the dickens do you mean, Cornwallis?"
And he said:
"I mean, Towler, that this is the hiding-place of a German spy. There's a telescope with which he picks up periscopes, and there's a lamp, with which he signals to the submarines by night, and there's the petrol he takes to them to replenish their tanks. And this shows the Doctor was right: you can get Fate in real life as well as Greek tragedies."
And I said:
"But the prawn-nets and fishing-lines and corks and paint, and so on?"
And he said: