My most recent book is The Ravenmaster's Secret.  I enjoyed reading it much more than I expected.  In fact, I had a hard time putting it down, reading every spare minute I could.  This historical fiction novel is set in the Tower of London.  Upon research, I found that the setting and general characters were factually accurate.  At one point in history, the king wanted to rid the Tower grounds of the noisy ravens.  His advisors told him that if all the ravens disappeared, the Tower walls would fall and it would fall into the hands of the enemy.  The king ordered the wings clipped on nine of the birds to keep them in the Tower, getting rid of the rest.  A Ravenmaster was appointed to care for the birds - an important task. 

The Ravenmaster in The Ravenmaster's Secret also had the duty to watch over prisoners.  His son, Forrest, became involved with a prisoner, a young girl his age, and became convinced of her innocence.  Commiting treason and risking his life, he helped two friends escape certain death.  In the process, Forrest learned a life lesson.  He stood up for what he believed was right.  After reading this story, I would ask students to form and opinion and debate whether Forrest was right to defy the laws of England or whether he should have honored the laws and allow justice to take place.  It would certainly make them think a lot about right and wrong.