Now watching Perry Mason movie series made starting in 1930s -- first movie 1934, second 1935. Finished first two movies.
A very different Perry Mason from the TV series I've watched end-to-end 4+ times (271 episodes each time). Example: Perry has a LARGE law firm with multiple Lawyers and many staff members working for him. Example: Perry "cuts corners" relative to the law to save his innocent clients from Execution. It is believable.