re: #326 Feline Fearless Leader
And Brady vs Maryland was a 1963 decision. Perry Mason on TV had it’s first run from 1957-1966. “Witness For the Prosecution” was a 1957 movie, and also took place in the UK judicial system.
(Just two media examples that I recall featured one side or the other pulling “surprise” evidence or witnesses out without the other side getting any advance notice.)
It’s a great thing that is now unconstitutional. Everyone understandably wants to see people do time for their crimes but it’s not justice to withhold evidence even if the person is guilty.