Porthos is out to lure the Spanish spy-master to Paris to prove Rochefort's betrayal to the King. Meanwhile, Athos and d'Artagnan must save Constance from certain death.
Things get even more tricky when they must get to the Queen before Rochefort does. Will they be able to protect their comrade Aramis and Her Majesty from the evil cardinal? France's fate is in the hands of the Musketeers, can they save the day?
The Musketeers, BBC1, 9pm
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