While the exact word "Exposure" is sometimes used as a shorthand, other shows have high-stakes eighth episodes in their fourth seasons:
A lighter "feature" involves the station's rescue of a tortoise, which they nickname Leonardo (later revealed to be named Donatello).
The "Bubble Guy" struggles with whether to stay in Cicely or relocate, while Maggie deals with her lack of control over his decisions. Other Series with S4E8 "Exposure" themes [S4E8] Exposure
This documentary episode features real-life criminal investigations in Memphis, showcasing the of a murder case where a man was shot in his car at a mini-market. "Northern Exposure" Thanksgiving (TV Episode 1992) - IMDb
Joel Fleischman is devastated to receive a letter extending his service in Alaska by another year, leading to a childish rant where he compares himself to a persecuted prisoner. While the exact word "Exposure" is sometimes used
Remi faces literal physical to ZIP poisoning, which is rapidly deteriorating her mental state and causing hallucinations of her dead brother, Roman. Chicago Fire (S4E8): "When Tortoises Fly"
Though the episode is titled "Thanksgiving," the series name itself matches your topic. In this episode, the town of Cicely, Alaska, celebrates Thanksgiving with a unique tradition that includes throwing tomatoes at white people to symbolize historical grievances. "Northern Exposure" Thanksgiving (TV Episode 1992) - IMDb
This episode features a massive of secrets. Kurt Weller finally reveals the truth about Jane/Remi to Patterson and Rich Dotcom.