Where papers are kept in detective's investigation about plot (8,4)
I believe the answer is:
dispatch case
'where papers are kept' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'detective's investigation about plot' is the wordplay.
'detective's' becomes 'di's' (Detective Inspector).
'investigation' becomes 'case'.
'about' is a charade indicator (letters next to each other).
'plot' becomes 'patch' (synonyms).
'case' put after 'patch' is 'patchcase'.
'dis'+'patchcase'='DISPATCH CASE'
'in' acts as a link.
Can you help me to learn more?
(Another definition for dispatch case that I've seen is " documents found here".)