Spoilers for 3x1 from spoilertv
We jump directly into the midst of the battle zone with the Musketeers in combat mode. The heroes must outfox the Spanish artillery if they are to gain the upper hand, however the odds are against them. Meanwhile Aramis initiates an investigation of his own, albeit connected to his friends quandary. His new pals are in the dark about who he is - while you may be surprised at their identity - but when the war comes to Douai he is compelled to take charge.
http://www.spoilertv.com/2016/02/the-musketeers-episode-301-spoils-of.html
"The secret to creativity is knowing how to hide your sources." ~Albert Einstein share