The chieftains of Sevenwaters have long been custodians of a vast and mysterious forest and a new heir has been born. But the family's joy turns to despair when the baby is taken, and something unnatural is left in his place. To reclaim her newborn brother, Clodagh must enter the shadowy Otherworld and confront the powerful prince who rules there.
For those of you new to this series I strongly suggest you start with the first one Daughter of the Forest. Unfortunately, Heir to Sevenwaters is not a stand alone book. This series revolves around a family in medieval Ireland and the family connections of who married whom and what kids they have start to get complicated by the 2nd and 3rd books. But it is all very worth the read.
I'd given the first 3 of this series 5 stars and the only reason I gave Heir 4 stars was that it became apparent to me that Marillier uses a formula for these books. It's a good formula and I enjoy it because the characters are still original and the stories interesting, but sometimes you want a little variety.
One thing I love about these books is the love stories. They always tug at me and make me all warm and fuzzy inside. And the love story in Heir was very well done and at the very beginning the relationship between Clodagh and Cathal made me think of the relationship between Elizabeth Bennet and Mr. Darcy in Pride and Prejudice. Which works well for me. :)
So overall, I really enjoyed this book and I'm looking forward to reading the rest of the series. And again, if you're interested in this book, you really should start at the beginning of the series.