# The Case of the Positive Negative

> episode of Perry Mason (S9 E28)

**Wikidata**: [Q114526892](https://www.wikidata.org/wiki/Q114526892)  
**Source**: https://4ort.xyz/entity/the-case-of-the-positive-negative


## References

1. [Metacritic](https://www.metacritic.com/tv/perry-mason/season-9/episode-28-the-case-of-the-positive-negative/)
2. [Trakt.tv](https://trakt.tv/shows/perry-mason/seasons/9/episodes/28)