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 Penny Press, the Universal, The Guardian, the LA Times, The Star Tribune, The Telegraph, The Mirror, the Evening Standard, The Independent and The Times.
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