Phi is approaching Dac status: it is hard to find new things to say about him, because his crosswords are always so good and sound and there are hardly any points where you have any doubts.
I have looked for ages at the completed grid, and apart from the fact that at one point in the unches you can read “he did us”, which is probably just chance, I can see nothing. Unless this is some reference to the book and Conan Doyle, which doesn’t seem to be the case. But knowing Phi there will be something.
Definitions in italics.