This is one of those times where I remembered liking a book more the first time I read it. Re-reading it, I found I'm just not a big Evanovich fan. She has a style of cutesy, short and abbreviated writing style that doesn't suit me. I will say at least it's easy to read and quick to breeze through.
There IS genuine humor that works - I laughed out loud a few times - but some of it comes off as forced and a little contrived. Stephanie is motivated by the greed of success, but I don't see much else about her as a realistic character. Morelli is probably the best part, as he's amusing too but his dialogue is well constructed (the scene with Ranger and the truck was probably the best part of the book.) I know many love the Grandmother, and she is cute, but she's also stereotypical - as is the mother and father.
These books are fun - the plots are creative enough for this type, the humor is real, the writing easy to digest, characters enjoyable to a point....but it doesn't have a deep core or that much substance other than some predictable staples.
“It's a penis,' Grandma said. 'Stephanie got it in the mail. It's a pretty good one too.”