What ghost does in favourite locations? (6)
I believe the answer is:
haunts
'locations?' is the definition.
(haunt is a kind of location)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for haunts that I've seen before include "Frequents or visits as a ghost" , "Visits like a ghost" , "Frequently visits" , "Frequently visited places, hangouts" , "Inhabits as a ghost" .)