---
name: "Thania St. John"
canonical: "https://film.one/person/thania-st-john"
fi1m_id: "thania-st-john"
imdb_id: "nm0820692"
tmdb_id: 1246967
wikidata_id: "Q7710396"
roles: ["Writer"]
reviewed_on_fi1m: 2
average_fi1m_score: 72
average_as: "writer"
average_over: 2
updated: "2026-09-26T15:09:55.032623+00:00"
licence: "© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL."
---

# Thania St. John

## Identity

Thania St. John

- **Canonical:** https://film.one/person/thania-st-john
- **Type:** Person
- **Fi1m ID:** thania-st-john
- **IMDb ID:** nm0820692
- **TMDB ID:** 1246967
- **Wikidata ID:** Q7710396
- **Same entity:** https://en.wikipedia.org/wiki/Thania_St._John, https://www.wikidata.org/wiki/Q7710396, https://www.imdb.com/name/nm0820692/, https://www.themoviedb.org/person/1246967

Writer. Born in Chicago.

## Details

- **Work:** Writer
- **Active:** 1997–2011
- **Average Fi1m score:** 72, as writer, over 2 titles
- **Fi1m score by decade:** 1990s 80 (1), 2010s 63 (1)
- **Elsewhere:** https://en.wikipedia.org/wiki/Thania_St._John, https://www.wikidata.org/wiki/Q7710396, https://www.imdb.com/name/nm0820692/, https://www.themoviedb.org/person/1246967

## Streaming the US now

- **Peacock:** [*Grimm*](https://film.one/tv/grimm.md) (63)

For United States; add `?region=XX` for another country.

## Biography

Thania St. John is an American television writer and producer. She began her career as a story editor on series including *21 Jump Street* and went on to write and produce episodes for numerous shows.

Her credits include story work on *Buffy the Vampire Slayer* (1997) and writing and producing roles on *Grimm* (2011), *Chicago Fire* (2012), *Eureka* (2006), *Roswell* (1999), *Project Blue Book* (2019) and *Drop Dead Diva* (2009). She created the series *Crisis Center* (1997) and contributed to *Ballard* (2025). She also adapted stories for the Netflix series *The Witcher* (2019).

St. John graduated from Harvard University in 1983 and holds an MFA from UCLA. She is a founding member of the League of Hollywood Women Writers and has taught television writing at the American Film Institute and Sundance Collab.

*Sources: en.wikipedia.org, imdb.com.*

## On Fi1m (2)

- *Grimm* (2011), Fi1m 63, Story, Writer — [page](https://film.one/tv/grimm.md)
- *Buffy the Vampire Slayer* (1997), Fi1m 80, Story — [page](https://film.one/tv/buffy-the-vampire-slayer.md)

## Complete filmography (15)

Every credit, newest first. Titles without a page can be requested for review on the HTML page.

- *Ballard* (2025), series, Writer
- *Project Blue Book* (2019), series, Writer
- *Chicago Fire* (2012), series, Writer
- *Grimm* (2011), series, Writer, Story — Fi1m 63, [page](https://film.one/tv/grimm.md)
- *Unnatural History* (2010), series, Writer
- *Drop Dead Diva* (2009), series, Writer, Consulting Producer
- *The Little Mermaid: Ariel's Beginning* (2008), as Additional Writing
- *Eureka* (2006), series, Executive Producer, Co-Executive Producer, Writer
- *Huff* (2004), series, Writer
- *Veritas: The Quest* (2003), series, Writer, Teleplay
- *Roswell* (1999), series, as TV Reporter (uncredited) · Writer
- *Buffy the Vampire Slayer* (1997), series, Story — Fi1m 80, [page](https://film.one/tv/buffy-the-vampire-slayer.md)
- *VR.5* (1995), series, Creator
- *Lois & Clark: The New Adventures of Superman* (1993), series, Writer
- *Before the Storm* (1991), Writer

---
© Fi1m Ltd. Written by AI under a human editor; checked against sources before publication. Quote with attribution and a link to the canonical URL. Canonical: https://film.one/person/thania-st-john