A classic mystery from days gone by. The body of Sir Wilfred Saxonby is discovered on a train, but the carriage was locked, so he must have killed himself, mustn't he? The days when legwork really was legwork, when every little detail had to be worked out with no help from computers or smartphones! I love these old fashioned stories, but perhaps this one was a bit too long winded and complicated. It was a fascinating step back in time but I was quite glad to step forward again to today!