S1·E19 Dogtanian Is Put to the Test

Dogtanian continues pursuing The Black Moustache, on the way out of the Musketeers headquarters he runs into Athos who's showing off his new baldric. Dogtanian tries to see the back and makes Athos look a fool when he finds out the baldric doesn't have a back. Athos challenges him to a duel, Dogtanian agrees and arranges it half an hour after his duel with Porthos. Dogtanian resumes the chase and runs into Aramis, as he's approaching he accidently kicks a stone at Aramis' girlfriend, leading to another duel again half an hour after the duel with Athos...