The phrase "debut episode" refers to the first episode of a TV show or podcast series. It is the initial or first-ever episode that introduces the audience to the storyline, characters, and overall concept of the show. Full definition
Megyn Kelly went on the Late Show with Stephen Colbert ahead of Tuesday's debut episode of Megyn Kelly Presents. (fortune.com)
A Manhattan judge has ordered CBS to turn over emails by this morning in an attempt to establish who has editorial control over a television series about Brooklyn DA Charles Hynes» office or else face an injunction that would postpone the show's debut episode next week. (nystateofpolitics.com)
Spike debuted episodes from the Browder piece, featuring Jay Z as an interviewee, and a pair of young African American filmmakers unveiled «Whose Streets? (latimes.com)