The BEST episodes written by Albert A. Vail
#1 - The Case of the Golden Venom
Perry Mason - Season 8 - Episode 17
A woman hires Mason to nullify a clause in her late husband's will that disinherits her if she reopens the investigation of her son's death.
#2 - The Case of the Accosted Accountant
Perry Mason - Season 7 - Episode 14
Edward Lewis's increasingly bitter arguments with his father-in-law make him the suspect when the old goat is murdered.