Twenty Rules for Writing Detective Stories By S.S. Van Dine

I’ve seen these rules before and found them again here. I prefer mystery novels that follow them, in addition to my own rules(bold):

In 1936, S.S. Van Dine (author of the Philo Vance mysteries) published an article titled «Twenty Rules for Writing Detective Stories.» Obviously, a lot has changed since then — but maybe not as much as we might think. The rules are: Les videre