I'm a bit irked with this book, I'm afraid. I started reading this series three years ago because the title of this, the final book, sounded so enticing. I worked my way through them slowly, because there were only six books in the series, and I didn't want them to get to this one too quickly. I liked the series better and better as it progressed, and so I'm afraid I set myself up for a bit of a let-down, as I did have pretty high expectations for Becoming Holmes.
It's not that this is a bad book. I felt like it meandered a bit in the middle before figuring out where it was going, but that didn't bug me much. I did greatly dislike one thing, though, a thing I found terribly out of character, and I'm going to say it here and it's going to be spoily, so if you are thinking of reading this book or series and don't want spoilage, just skip to the next paragraph and you'll be fine. The thing I disliked was that Sherlock Holmes deliberately killed a villain, then lied about it, pinned it on another villain, and was not particularly bothered by this behavior. And while the canon Holmes does sometimes take the law into his own hands, it is never in this lying, conniving way. This felt beneath him. Understandable for the character Peacock has written, but, in the end, not for someone who is becoming Sherlock Holmes.
Up until the final chapter, when the above was revealed, I was not enchanted with this book, but I wasn't irked with it the way I am now. Now I'm pursing my lips and glaring at it out of the corners of my narrowed eyes, and that's just not how I wanted to feel about this book.
Still, the series as a whole has been entertaining and inventive. I'm glad I've read them, but I don't think I'll ever feel the urge to reread them.
If This was a Movie, I Would Rate It: PG-13 for disturbing images, violence, death, and some creepiness.