"Bolton's opinion is that O'Brien was without doubt the man who fired at you, looking to the type of gentleman he is, and the fact that you ran into him immediately afterwards, and especially the fact that he actually does possess an old rook rifle. He thinks he may have done it out of sheer Irish deviltry, you offering so convenient a target, just as they pot landlords in his own happy country. A man can hardly have drunk as heavily as he must have done without upsetting his brain a bit, and this theory seems to me not at all unlikely. "Bolton thinks it hardly conceivable that O'B. can have had any deliberate idea of getting rid of you, since it is certain that he wasn't the man in oilskins you met the night you landed--or rather, dropped. He can't have been _because he doesn't know a word of German_. We ought to have thought of that clue ourselves. Bolton was on to it at once and points out that it puts out of court the whole inhabitants of the island except Miss Rendall who has a pretty good school-girl's knowledge of German, and her father who has been abroad a lot and knows a bit of the language. And apart from all other considerations, the man in oilskins can't have been either of them owing to their height. Miss R. is too short and Mr. R. too tall. "Assuming therefore that you weren't a bit light-headed or anything of that kind (which, I am bound to say, Bolton thinks quite a likely explanation), the man you met _must_ have landed from a submarine and gone away again in her. Bolton feels positive on this point, and I must say I agree with him. "The only remaining difficulty is the attack on the shore. Here Bolton takes exactly the same line as I did when I questioned you. He thinks that as you didn't actually see anybody, and as what you think you saw and heard are so vague and indefinite and so difficult to fit into any known method of murder, one can't really draw any conclusions, and he quotes various cases he has known of people who fancied they were struck or seized or fired at in the dark, when actually there was some other explanation. "By the way, as to the old gentleman with tinted spectacles who asked for a match, Bolton made enquiries of a number of people about the old men in the island, and he even took the trouble to interview them all. None have tinted spectacles and all deny having spoken with you. I am afraid that this discovery made him a bit sceptical about some of the other incidents. However he went into the whole thing very carefully indeed and I think we can all feel satisfied that with the departure of Mr. O'Brien the possibility of trouble within the island has been eliminated. Of course the Lord only knows who may not land in the place by night, and they may quite possibly have squared one or two of the natives to show a light, or to keep their eyes shut, or help them in one way or another. But that's rather a different story.