Chapter 21 Summary

D’Artagnan and the Duke of Buckingham ride fast toward Buckingham’s residence. On the way, d’Artagnan explains what little he knows about the Queen’s predicament, and Buckingham, who knows more, realizes how dire the situation is. He is so eager to return the diamonds and save Queen Anne's reputation that he lets his horse trample anyone in his path.

At his palace, Buckingham gets out the diamonds and immediately goes pale. The Queen gave him twelve diamonds, but he counts only ten in the box. He concludes correctly that the two missing diamonds were stolen by Milady, the Cardinal’s agent in England.

To help the Queen, Buckingham needs to do two things. First, he needs to get a full set of diamonds...

(The entire section is 556 words.)