Who P-P-P-Plugged Roger Rabbit?

The movie Who Framed Roger Rabbit? is "based" on the book Who Censored Roger Rabbit but, in case you couldn't tell by the quote marks around the word based, it wasn't really. Several characters had the same names and that was the beginning and the end of it.
Who P-P-P-Plugged Roger Rabbit? is a sort of sequel to both. Author Gary K. Wolf keeps certain elements from his first book (toons speaking in word balloons rather than voices being my favorite) and other elements from the movie (the fact that Jessica actually cares about Roger, for instance), and turns them into a really good mystery novel that's only really good if you haven't read Who Censored Roger Rabbit? or seen Who Framed Roger Rabbit. (There's no question mark at the end of the movie title. According to Mouse Under Glass, movies with punctuation weren't selling tickets so Touchstone opted out of the question mark.)
It was an interesting story, certainly, but I have both read the first book and seen the movie, and the half-assed disclaimer at the start of the book (something along the lines of "Roger and his friends play it fast and loose with the facts") doesn't cut it for me.
And from here on in, there are spoilers mainly about the first book (and one about the second):
Roger Rabbit dies in the middle of Who Censored Roger Rabbit?. He's murdered, he's dead, and his doppelganger disintegrates on the last page, thus leaving no room for a sequel. Gary K. Wolf makes exactly no attempts to explain how Roger Rabbit un-died. No dice, buddy. The second the book starts I'm against you. How is Roger alive? I don't care how shitty your explanation is, just as long as you give me one.
In fact, now that I think about it, all my problems with this book lie in the fact that he seems to have let the movie influence his writing. Roger's alive in this book because he's alive in the movie. Jessica loves Roger in this book because she loves Roger in the movie (in the first book she only married him because of a genie-granted wish. We're actually supposed to spend all of this book thinking she's cheating on Roger but I could tell it wasn't going to end that way). Heck, I'm sure if I bothered to go back and look it up, I'm pretty sure Roger Rabbit looks different in the first book than he does in the second because Wolf altered his appearance to fit how he's drawn in the movie.
And that really fucking bothers me. This book feels like a bit of a cash-grab in that respect. Rather than staying true to his original ideas, he wrote a book to capitalize on the fact that a movie "based" on his original ideas was incredibly popular.
That being said, if I were to ignore the inconsistencies between Censored and P-P-P-Plugged, or if I had only ever read the latter, I would have really enjoyed it. It's funny, it's got a lot of stereotypical hard-boiled-detective-novel dialogue and metaphors. Unlike Robert Bloch's Psycho novels, Wolf gives you the information you'd need to figure out the mystery yourself if you really wanted to and I was satisfied that the ending used all the information given throughout the book (as opposed to several people's problem with Censored, that the ending had nothing to do with the rest of the book).
So, yeah, it's a good book and it could have been a great book if he hadn't let himself be so heavily influenced by the movie.

End of line.
-Sally