The pilot episode, “Emissary”, is considered to be two episodes in the numbering scheme used by Paramount. So the next episode, “Past Prologue”, was the second to air but is considered the third episode of season one. I will put the season and episode number in the titles of all further posts dealing with individual episodes. This makes it easier to search for particular entries. The format is straightforward: season one, episode three will be represented as S01E03.