Crossword Genius

Life-changing dossier (4)

Ross

I believe the answer is:

file

'dossier' is the definition.
(a dossier is a file or set of information)

'life-changing' is the wordplay.
'changing' is an anagram indicator.
'life' anagrammed gives 'FILE'.

(Other definitions for file that I've seen before include "Folder; line" , "Set of papers" , "Line of people, one behind the other" , "Set of related records kept together" , "Document folder" .)

I've seen this clue in The Mirror.
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