Detective Miller found a coded diary next to a poisoned diplomat. The cipher substitution was simple: every letter shifted forward by three. The final sentence read: 'THE ENEMY HAS ARRIVED AT DAWN.' Miller immediately realized the diary was a forgery planted by the diplomat's secretary. What was the flaw in the diary?
The diplomat was a lifelong native speaker of a language that uses the Cyrillic alphabet, yet the diary was written in English ciphers.
A diplomat who exclusively used a foreign native script wouldn't spontaneously write a coded entry in English shorthand unless staging an international incident.
About this riddle
Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.
Difficulty: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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