Perry Mason season 2, episode 4, titled "Chapter Twelve", sees the Los Angeles detective finding out a new troubling piece of information in the Brooks McCutcheon murder case. The hard-boiled noir series Perry Mason is an HBO original and the origin story of the famed detective from the 1960s. Perry Mason begins with the titular lawman working as a low-rent private eye, but by season 2, he has established a law firm in Los Angeles with his partners Della (Juliet Rylance) and Paul (Chris Chalk), and their first case is a murder that is not as simple as it seems.
https://screenrant.com/perry-mason-season-2-episode-4-recap/