Crossword Genius

Mystery (6)

Ross

There are a few possibilities for this:

'mystery' is the definition.
(I know that mystery can be written as secret)

This is all the clue.

(Other definitions for secret that I've seen before include "Inner" , "Concealed" , "Confidential or mysterious" , "Security marking" , "One not to be divulged" .)

I've seen this clue in the USA Today, The Telegraph, the Penny Press, The Times, the Universal, The Independent, the Evening Standard, The Guardian, the LA Times, the King Feature Syndicate, The Star Tribune and The Mirror.
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