Calls for CID officer, having first called earlier (5)
I believe the answer is:
needs
'calls for' is the definition.
('need' can be a synonym of 'call for')
'cid officer having first called earlier' is the wordplay.
I cannot really see how this works, but
'called' could be 'nee' (nee may be written to show someone's name at birth) and 'nee' is found in the answer.
'cid officer' could be 'ds' (Detective Sergeant) and 'ds' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for needs that I've seen before include "Requires or lacks" , "Things that are wanted" , "Requirements" , "Essentials" , "What is required" .)