'There are two main points that I don't understand,' I said. 'First,
you've never explained why an _Englishman_ should be watching those
waters and ejecting intruders; secondly, your theory doesn't supply
sufficient motive. There may be much in what you say about the
navigation of those channels, but it's not enough. You say he wanted
to drown you--a big charge, requiring a big motive to support it. But
I don't deny that you've got a strong case.' Davies lighted up. 'I'm
willing to take a good deal for granted--until we find out more.'

He jumped up, and did a thing I never saw him do before or
since--bumped his head against the cabin roof.

'You mean that you'll come?' he exclaimed. 'Why, I hadn't even asked
you! Yes, I want to go back and clear up the whole thing. I know now
that I want to; telling it all to you has been such an immense
relief. And a lot depended on you, too, and that's why I've been
feeling such an absolute hypocrite. I say, how can I apologize?'

'Don't worry about me; I've had a splendid time. And I'll come right
enough; but I should like to know exactly what you--'

'No; but wait till I just make a clean breast of it--about you, I
mean. You see, I came to the conclusion that I could do nothing
alone; not that two are really necessary for managing the boat in the
ordinary way, but for this sort of job you _do_ want two; besides, I
can't speak German properly, and I'm a dull chap all round. If my
theory, as you call it, is right, it's a case for sharp wits, if ever
there was one; so I thought of you. You're clever, and I knew you had
lived in Germany and knew German, and I knew,' he added, with a
little awkwardness, 'that you had done a good deal of yachting; but