An unconventional pastiche, A Study In Terror is a novelization of the somewhat overlooked 1965 film of the same name; although whilst several prominent plot points remained, it does very much deviate from the movie it was based on. Additionally, in the tradition of those "editorial" notes which find themselves preluding many Watsonian manuscripts, explaining where this lost adventure you are about to read was uncovered, this book takes that trope a step further, weaving its origin into the story itself. Ellery Queen, knee deep into a writer's block, finds himself the unwilling recipient of what is purported to be Dr Watson's journal, but who sent it to his acquaintance, and, more importantly, why?
Thus, the reader has two mysteries to unravel, and while neither are overly complex, they both provoke the mental gears into turning, or else one risks losing the threads entirely. We follow Ellery as he reads the journal piecemeal, every chapter or two interspersed with his ruminations on what he has just read, and his acquaintance's investigation into how the manuscript came to be in his hands.
The case itself, as I mentioned, was not very difficult to solve, but there was still much fun to be had in unraveling this mystery. Aside from that, the exceptional characterizations helped me to overlook some of the more easily guessed at aspects. This was, if nothing else, a convincing pastiche that admirably met the task of conjuring Holmes & Watson as penned by Doyle.
What I did not expect from this was the twist, of sorts, at the denouement. Instead of Holmes cleanly solving the riddle, and Watson writing it down for posterity, we learn that the doctor has leapt to the wrong conclusions in penning it, with the actual solution (that we learn Holmes was aware of) being well concealed somewhere in the journal's pages. In that regard, it excelled as not only pitch-perfect pastiche, but traditionally structured mystery, where all the clues are hidden in plain sight and the solution is logically explained at the denouement. Overall, I found it to be an excellent read worthy of Holmesian attention.