Opening of false accounts conceals troubling truth (4)

I believe the answer is:

fact

'truth' is the definition.
(fact can mean truth or reality)

'opening of false accounts conceals troubling' is the wordplay.
'opening of' says to take the initial letters.
The first letters of 'false accounts conceals troubling' is 'FACT'.

(Other definitions for fact that I've seen before include "Item of truth" , "Actuality" , "Something indisputable" , "matter of record" , "Fait accompli" .)

I've seen this clue in The Guardian.

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