If you're an author, you need to be aware that your publisher might not be sending your book to everyone who wants to review it. Except Harriet Klausner of course. I've had reviews blurbed on the finished book, and the following year never even see the book by the same author. If you have a favorite reviewer or reviewing source, check to make sure they got a book.
At Crimespree we deal with an awful lot of different publicists at a lot of different companies. Some are really great, like Rachel Eckstrom and Danielle Bartlett. And some are not very good at all.
I understand they are doing a lot of work for a lot of books, but what I'm getting at is you need to keep track yourself. If Mystery Scene loved your first three books, make sure they got the fourth, don't just assume it was sent. You don't need to ask if they are reviewing it, just let the reviewer know you wanted to make sure they got a copy.
That said, just having an arc doesn't mean we will review a book. There are a lot of different factors that go into deciding what gets reviewed, and we just can't review them all, but that's another topic.