Erak's Ransom, book seven of the Ranger's Apprentice series

This series is incredibly well written, but is a series in which you really should read the books in order.

In this book, Erak is captured by the Arradi, a desert tribe. Araluen is asked for help, and the Rangers and Horace find themselfs on a diplomatic mission in a foreign land. A large theme in this book is being surrounded by strange customs, and becomes a problem in some points in the story. I recommend this book to those who have read the previous books and want a good level, well written book.