You can get the episode crew by calling the TV episode credits method:

/tv/{tv_id}/season/{season_number}/episode/{episode_number}/credits

Take a look at the crew field.

There is TV season crew as well, you can find that data by calling the TV season credits method:

/tv/{tv_id}/season/{season_number}/credits

Hey @travisbell my bad, little naming mistake here, I meant the cast, not the crew. I know it is possible to get the per-episode crew, but the cast that gets returned when you go to, i.e> https://api.themoviedb.org/3/tv/1399/season/1/episode/7/credits is actually the season one

Yes, so /credits returns 3 fields: cast, crew and guest_stars.

It sounds like you're looking for the guest_stars, is that right? That would be the per episode cast.

Aren't guest stars the exceptional appearances ? For example let's take GoT episodes 6/7:

• https://www.themoviedb.org/tv//1399-game-of-thrones/season/1/episode/6/cast?language=en-US
• https://www.themoviedb.org/tv//1399-game-of-thrones/season/1/episode/7/cast?language=en-US

Cast-wise, the episode 7 would be without (spoiler, character that died in ep 7). Going to IMDB confirms this, otherwise here he is not at all present in guest_stars, only in cast.

Not sure, that's all we have.

• Season regulars: Cast member who are added season wide ie. to every episode
• Season crew: Crew members who are added season wide ie. to every episode
• Episode guest stars: additional cast members for an episode
• Episode crew: Individual episode crew credits like writing and directing for an episode

For a situation like a mid-season death, unless they were removed as a season regular and then re-added as guest stars there isn't really a way to show that data here.