The Three Musketeers, Chapter 21 summary
Chapter 21 of 68 · 13 min to read the chapter
In Chapter 21, D’Artagnan discovers that two of the queen’s diamond studs are missing, and Buckingham arranges perfect replacements while stopping ships from leaving for France. D’Artagnan accepts transport and horses rather than personal payment, returns rapidly to Paris with the diamonds, and learns that his company is serving at the Louvre.
What happens
- In Buckingham’s private chapel, two missing studs lead the duke to accuse the Comtesse de Winter of theft for the cardinal.
- Buckingham orders a shipping embargo and confines O’Reilly to a guarded workshop to make two matching diamonds.
- The replacements are ready two days afterward, and Buckingham gives D’Artagnan the studs while keeping their case.
- D’Artagnan rejects personal payment but accepts passage, four horses, and instructions for a password-based relay route.
- During departure, D’Artagnan thinks he sees Milady aboard another vessel, but he cannot get a clear look.
- D’Artagnan rides through the relay stations to Paris, where M. de Tréville directs him toward his company at the Louvre.

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In this chapter
What to notice
Buckingham places his devotion to Anne above public and religious duties. His embargo shows how this private attachment shapes political action.
Quick check
Why does Buckingham stop ships from leaving?

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