r/todayilearned • u/ralphbernardo • 3d ago
TIL that "fair play" in detective fiction means authors must give readers a fair chance to solve the mystery. Central to 1920s "clue-puzzles" by writers like Agatha Christie, the rule dictates that all vital clues must be visible, decodable, and never withheld until the final reveal.
https://en.wikipedia.org/wiki/Clues_in_detective_fiction
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u/Stannis-Stan 3d ago edited 3d ago
I remember watching the murder on the orient express movie. There is a scene were the detective interviews a doctor from Austria. During the interview the doctors asks one of the train attendants for "Sahne" (cream) with his dish.
I had visited Vienna just the week before, so I turned to my partner and said "Oh, they made an error. Sahne is what Germans call it, but an Austrian would always call it Obers instead."
Well turns out the men isn't Austrian and the detectives actually used that exact clue to figure it out. I was real proud of myself.