That being said, I found a show called "Patience" that aired on BBC Three in 2015-2016, but it seems there isn't an episode 6 in Series 1 (there were only 5 episodes).
Assuming this is the show you are referring to, here is a look into the dynamics and plot points typical of the Series 1 finale (Episode 6). Patience Series 1 - Episode 6
If you have been watching Patience for fast-paced detective work, Episode 6 will frustrate you. If you are watching for profound character study and thematic density, this is the series’ finest hour. That being said, I found a show called
By stripping away action sequences and reducing the plot to three people in three rooms, the show forces viewers to confront their own impatience. How many of us checked our phones during the long shots? How many of us wanted to skip ahead? The episode is a mirror. It is uncomfortable. It is brilliant. That being said
The Incident: A man dies on a bus in York after a violent coughing fit. Patience recognizes the symptoms as anthrax poisoning, which is soon confirmed by medical tests.
: Bea is warned off the case by superiors but refuses to back down, eventually nearly dying due to the exposure. This marks her final major case before her character moves away, leading to a new lead detective in Patience Evans (Ella Maisy Purvis)