# The Sign of Four

> 1987 television film directed by Peter Hammond

**Wikidata**: [Q1170885](https://www.wikidata.org/wiki/Q1170885)  
**Source**: https://4ort.xyz/entity/the-sign-of-four-q1170885


## References

1. The Movie Database
2. [IMDb](https://www.imdb.com/title/tt0685628/technical/)
3. [IMDb](https://www.imdb.com/title/tt0685628/releaseinfo/)
4. Kinopoisk
5. Entertainment Identifier Registry
6. terjesztesre_kerulo_filmalkotasok_nyilvantartasa.xlsx
7. Online-Filmdatenbank
8. [Source](https://letterboxd.com/tmdb/329303)
9. Trakt.tv