Happenstance Found (The Books of Umber 1) is in hardcover,
paperback, Ebook and audio book now. 

Dragon Games (The Books of Umber 2) arrives January 26, 2010
in hardcover and Ebook. Audio book to come later in 2010.

The End of Time (The Books of Umber 3) is in hardcover,
Ebook and audio book now.
Paperback date to be announced.

The terrific audio books are read by the acclaimed
narrator Richard Poe (known for his reading of Dan Brown's
Angels and Demons and Cormac McCarthy's Blood Meridien).

If you can, buy through your local independent bookseller. These local
treasures need your support.  Find your local store at www.booksense.com

You can look for my books at any bookstore. If it's not on
the shelves, they can order it for you -- just ask!
You can also purchase through the following online booksellers: