I do own it, but it didn't fully satisfy me despite having many interesting scenes. Perhaps I should give it another chance one of these days, as I do often find myself talking about it.

I don't tend to have much 'book fanfic', since outside of slash etc I'm mainly interested in pre- or post-canon stories. A Slight Trick... is one of the few 'fiction'* items on my Holmes shelves. As someone once said, fan readers often fall into two groups: people who want 'more of' the canon, and 'more from' the canon. I'm in the 'more from' category, and tend to be more interested in odd stories, slash, and post-canon tales rather than straight pastiche. As a result, I tend to rely on other people to point out the interesting 'adventure' type reading.

Have you ever read Mister Clive & Mister Page by Neil Bartlett? I'd vowed to stop mentioning it to people because they mostly give me funny looks after reading it, but apparently I can't help it.

* Of course it's all fiction, but ah...I'm not sure what you call it if it's not really pastiche.