john451 wrote:
Apparently you are correct. I was watching "Murder She Wrote" last night and fictional author Jessica, talking about her latest novel, admitted that she didn't know who "did it" until she wrote the last 12 pages.
Many of the 1950's mysteries had the resolution on the last page of the script when it was handed to the director. Even several classic movies were in the same straits. A good example is Casablanca.