I'll say this upfront: if you're not a fan of CYOA books or of the Adrien English series, then you're probably not going to get much out of this. If you are a fan of Adrien-with-an-E and so-so on CYOA, then I think this will still be enjoyable. If you're a fan of both, you will LOVE this!
I used to read Choose Your Own Adventure books when I was kid. Remember those? They were little paperbacks, usually stapled together, and you got to choose which way the story would go back picking what storyline to follow next. They could be quite entertaining to see all the different ways a story could be told. Now, by the time Ms. Lanyon wrote Come Unto These Yellow Sands, I had completely forgotten CYOAs existed, but reading that book sparked a lot of fun memories. Then Ms. Lanyon gifted us with this gem and ... I didn't get it and dragged my feet. I finally got it shortly after So This Is Christmas came out and still didn't read it. I guess I was waiting until the right moment, and this moment was it.
Oh, what joy! Ms. Lanyon is certainly creative and she's given us so many different paths to choose. There are wacky shenanigans amok, and tentacles, and pirates, and some truly disturbing twists which thank God the actual story didn't go that way, let's just put it like that. The only thing that was missing was the Scooby Doo ending. :) But I'm sure if we ask real nice, she might give it to us as a Christmas Coda.