"Dragons to Keep" is estimated by the author to be of the approximate rating PG-13.

Warning: spoilers for the first, second, and third books are contained herein. Also contained herein may be what readers might consider teasers for book 4, but there are no outright spoilers for book 4.

FANTASY
The main focus of my books is strong fantasy, and that hasn't changed. The end is near--this will be the final book in this series--but there's still magic to be disovered. All our dragon friends are still with us, and they face their nemesis to determine the fate of their species and the fate of Byrd. The Lady's powers are not to be trifled with, but Morrigan and her allies have powers of their own. They will need everything they have to overcome her.
ADVENTURE
Adventure is the mainstay of this final novel in the series, though perhaps it's more like danger and battle. The Voyage Dragons are going to war, and their allies in Byrd and beyond are going to help them. Facing the Lady and her forces will be their biggest challenge yet. Plus, Sniper has a task of his own. The last Dragon Chamber is his to destroy, if he can only discover the key.
DESTINY
In this final book, fates will be decided. Who will survive the fires of war? Who will fail? Though it may not be fated by the gods, the dragons and humans together bring their destinies to the table, and fight for survival and freedom.