HairBrain, I've never seen anything like that.
As for putting of potential readers for the previous books by including a synopsis, well it didn't hurt LOTR (in fact, it made me desperate to get my hands on The Fellowship of the Ring and The Two Towers.) Also, for books by midlist writers, the first book or two may not be easily available when the third book comes out. I often like the look of a series book on the bookstore shelf, and then finding that the first book isn't there, give the whole thing a miss.
Of course I don't know if I am a typical reader in that respect.
As for putting of potential readers for the previous books by including a synopsis, well it didn't hurt LOTR (in fact, it made me desperate to get my hands on The Fellowship of the Ring and The Two Towers.) Also, for books by midlist writers, the first book or two may not be easily available when the third book comes out. I often like the look of a series book on the bookstore shelf, and then finding that the first book isn't there, give the whole thing a miss.
Of course I don't know if I am a typical reader in that respect.