[1] The series follows the musketeers Athos, Aramis, and Porthos as they serve King Louis XIII and citizens of 17th-century Paris.

[2] It stars Tom Burke as Athos, Santiago Cabrera as Aramis, Howard Charles as Porthos, Luke Pasqualino as D'Artagnan, Tamla Kari as Constance Bonacieux, Maimie McCoy as Milady de Winter, Ryan Gage as Louis XIII and Alexandra Dowling as Queen Anne.

Filming for the series took place mainly in Doksany, 30 km NW of Prague, where a Parisian square, a number of streets, and the musketeers' garrison were constructed.

[11] The show's executive producer Jessica Pope commented they would have to "recalibrate" plans for a prospective second series to accommodate Capaldi now being unable to reprise his role.

Reviewing the third episode, Morgan Jeffery, writing for Digital Spy, praised the development of the characters, stating that there was a "real feeling of growth" and that it delivered "something a little more substantial".

[14] Den of Geek writer Rob Kemp also gave a positive review, stating that The Musketeers had "won a lot of people over with its fun and adventurous take on this well-loved story", but also wrote that some of the dramatic elements felt "shoehorned and deliberate".

[15] Upon its premiere on BBC America, Alessandra Stanley of The New York Times gave the drama a positive review, calling the series "not at all bad, just a bit old-fashioned".

Shown on BBC One, the first series of The Musketeers was broadcast weekly at 9 pm on Sunday nights starting on 19 January 2014.