Misc: What's a cat-o'-nine-tails?

Questions

Which fictional private detective solved their last case in 1952?

In 1952 an erotic cookbook was published by Norman Douglas, intended for the "private use and benefit of a small group of friends". It included ingredients such as bull's testicles and sow's vulva. What was it called?

Which French writer won the Nobel Prize for Fiction in 1952?

We are all born mad. Some remain so." Which play?

Published in 1952, The Old Man and the Sea earned which American author the Nobel Prize for literature the following year?