Chapter 10 Summary

M. Bonancieux's apartment is now turned into a "mousetrap" by the cardinal's men – meaning they are now watching it and arresting all who come there in search of the landlord. By this method, they hope to arrest any and all conspirators of Madame and M. Bonancieux. D'Artagnan stayed by his own window to observe the success of the trap, also removing some of the tiles from his floor, and the insulation beneath them so he could hear anything that was said below. He is able to follow the full circumstances of the next visitor who is caught in the trap, and to his amazement, it's a woman who turns out to be Madame Bonancieux.

D'Artagnan decides it's time to intervene, and goes immediately to her apartment with his sword, dispatching the four men who were interrogating her. He knows they will eventually return...